Full Nelson Sex Position: How to Do It Safely
What Is the Full Nelson Sex Position?

The Full Nelson sex position borrows its name from that wrestling hold: the one where you hook your arms under someone's arms and clasp your hands behind their neck, completely immobilising them. The bedroom version takes that concept of total physical control, adds penetration from behind, and hikes the receiving partner's legs up high. It's… a lot.
Here's how it typically works: the receiving partner starts on top in reverse cowgirl (facing away), with the penetrating partner lying on their back. The receiver then leans back against the penetrator's chest. From there, the penetrating partner slides their arms under the receiver's knees or thighs and, in the classic version, clasps their hands behind the receiver's neck.
The partner on top ends up essentially folded, knees near ears, while the partner below supports, holds and controls everything. It works for vaginal or anal sex, with strap-ons and toys, and isn't limited to any particular combination of genders or orientations.
The appeal is fairly obvious: very deep penetration, a feeling of complete control for the penetrating partner, and that heady sensation of being utterly restrained and filled for the receiver. If you enjoy D/s play, or even just the idea of it, there's something immediately compelling about a position that physically embodies "I've got you."
However, and it's a big however, this is not a casual Tuesday night position. It's widely considered advanced, bordering on acrobatic. If you've mainly encountered the Full Nelson through porn, that's because it is a famous porn position; it looks outrageously wild and exposing on camera.
Why It Looks Hot in Porn but Feels Difficult in Real Life
On screen, the Full Nelson looks incredible. The receiving partner spread wide and completely at the mercy of whoever's driving from below. Visually, it's a feast of flexibility and dominance; no wonder directors love it. Try it off-camera, though, and the illusion can go quickly: bodies slide, knees land in strange places, and the whole thing can turn into a logistics problem before it feels sexy.
Porn vs. Reality: Porn performers are on the clock. They stretch, hit the angle, hold it for a few usable seconds, then someone cuts. In real life? Your bodies might not slot together so neatly. You could end up wobbling, fumbling with balance, or dissolving into laughter as you try to "lock" into position. Let it be funny. You're not auditioning; you're having sex. As sex therapist Casey Tanner notes, embracing a challenge like this works best when partners are ready to laugh through the trial-and-error moments.
Looks vs. Feeling: The Full Nelson drastically limits the receiving partner's movement. They usually can't grind, change the depth, or reach their clit without a toy or a free hand. The penetrating partner is also holding weight while trying not to slip out, which is less glamorous than it sounds. After the initial "Holy shit, we're actually doing this!" rush, some couples realise the pose is more spectacle than orgasm machine. If it starts feeling cramped, call it early.
Risk Factor: Let's not dance around it: the Full Nelson is riskier than standard positions. WebMD, of all places, warns that this move "should only be tried by very athletic partners… and even then, it can be risky". When WebMD is telling you to be careful in bed, pay attention. The position pretzels the receiving partner and requires the penetrating partner to manage both movement and the other person's weight. Without good balance and flexibility, you could both end up sore or injured.
I'm not saying bin the idea. If both of you are keen, give it a tiny test run and let it end quickly if it stops being fun. You may love the rush for thirty seconds, laugh, switch positions, and still count that as a success. That's probably the healthiest expectation to bring into it.
Who Should Skip or Modify This Position
Before folding yourself into a human pretzel, do the boring bit and check whether your bodies are actually up for it. Skip it, or soften it into a variation, if any of these sound familiar:
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Neck or Back Issues: If either of you has a history of neck, shoulder, or lower back problems, the Full Nelson can aggravate them badly. The receiving partner's neck and spine get flexed significantly when folded backward, and the penetrating partner's shoulders rotate forward holding the thighs. Any prior injury or chronic pain in these areas is a big red flag.
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Limited Flexibility: Can't touch your toes? No shame in that. This position demands hamstring and hip flexibility from the receiver (legs need to go high) and decent hip flexibility from the penetrator too. If your body isn't used to that range, cramps and pulled muscles are a real possibility. A seized-up hamstring is not sexy. Work on flexibility first if you're determined, or try partial versions until you limber up.
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Significant Weight or Height Difference: The Full Nelson works best when the penetrating partner can realistically support the receiver's weight. If there's a big disparity, a smaller penetrating partner might find themselves literally pinned underneath with no ability to move. Not exactly the vibe. In those cases, modify with furniture support or choose a different deep-angle pose entirely.
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Breathing or Circulation Concerns: The receiver can feel quite compressed in this position, with thighs pressing toward the torso and restricting chest expansion. If you have asthma, get short of breath easily, or hate the feeling of pressure on your chest, this probably isn't going to be enjoyable. Similarly, any tingling or numbness (legs falling asleep from being held aloft) is your cue to release and reposition immediately.
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New to Power Play: If being pinned makes your stomach drop in the bad way, don't start here. The Full Nelson is light bondage made out of bodies: one person holds, the other waits to be released. That can feel hotter, scarier, or more loaded than either of you expected. Try a hand pinned during missionary, one leg held up, an easier submissive position, or a few seconds of pressure you can easily wriggle out of first. If you're already bargaining with yourself about tolerating it, choose something else. If you're new to BDSM generally, sort out safe words and negotiation before anyone gets held down.
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Pregnancy or Physical Limitations: Pregnant? Recovering from an injury? Mobility limited? Don't make this the test. This one asks too much folding and balancing for the payoff.
Pay attention to your body, and to the little "nope" in your stomach. A wild position isn't a checklist item you must tick off. Knowing your boundaries is far sexier than someone who barrels ahead ignoring their body's signals.
How to Get Into the Full Nelson Step by Step

So you've done your reality check and both partners are genuinely up for it. Take the setup slowly. Rush it and you'll get elbows, knees, slipping, and a very unsexy "wait, wait, ow."
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Start with Reverse Cowgirl: Penetrator lies back; receiver sits on top facing away (toward the feet). Get settled with penetration in this orientation first. Use pillows under the penetrating partner's head if they want to watch. Make sure you've applied lube; you'll need it when angles shift. Take a moment here. At this stage, it's just someone on top facing away; nothing acrobatic yet. Enjoy this bit, because it may end up being the position you return to.
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Lean Back Onto the Penetrating Partner's Chest: Receiver, lean backward slowly. Penetrator, catch them at the back or hips; don't yank them down. The goal is for the receiver to go from sitting upright to reclining so their upper back rests against the penetrator's chest. It's something of a trust fall. The receiver can keep their feet on the bed for balance as they lean. If this already feels vulnerable and thrilling, stay there for a few breaths before making it more complicated.
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Bring the Legs Up: Now the tricky bit. The receiver bends their knees and draws them up toward their chest, almost like pulling your knees toward your shoulders. The penetrating partner helps by sliding their arms one at a time under the receiver's thighs, snaking each arm under the back of each knee from the outside. Depending on flexibility, the receiver's legs might naturally open into a wide V shape; find whatever angle works for your body. There's no mandatory degree here; even halfway is a significant change in angle and sensation.
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Lock the Hold (Optional): If you both feel stable with the legs lifted, you can attempt the classic full nelson lock by bringing the hands up behind the receiver's neck and clasping them together. This traps the receiver's arms and secures their legs in place. The hands are there for the look of the lock, never to choke, crank, or force the head down. Many couples skip this entirely, and I think rightly so. You can achieve the position just as effectively by holding behind the thighs. I'd actually argue the thigh-hold version is superior for most people (more on that below).
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Adjust and Communicate: You're in position. Now adjust. Are you aligned, or is someone twisted uncomfortably? The penetrating partner can scoot their hips or use a pillow under their arse for a better angle. The receiver can let their arms rest wherever feels natural. Some hold onto the penetrator's wrists, some let them hang. Check in verbally: "Feel okay?" "Too much on your neck?" "Hold on, let me shift my arm." Do the fussy little adjustments before you start moving. That awkward setup is part of making the position feel intimate instead of stressful.
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Establish a Safe Signal: Because the receiving partner is fairly immobilised once in this hold, agree on stop and slow down before you get tangled up. If the receiver can speak comfortably, a safe word works: "red" or "pause" or whatever you've agreed. If not, choose a physical cue beforehand: three taps on the penetrator's arm, clicking fingers, anything unmistakable. Setting a safe word or using traffic lights matters here even if you don't think of yourselves as kinky. Any time one partner can't easily move away, they need a reliable way to end the moment. If you're going hands-behind-neck, the receiver's ability to tap or click is limited, so settle on the signal in advance.
Now you're in action. If all systems are go, begin with gentle movements and see how it feels. Keep communicating throughout. If something pinches or anyone needs to adjust, pause. For a first try, a minute or two in the full pose may be plenty before you switch to something easier.
The Safer Default: Hold the Thighs, Not the Neck

Here's where I get a bit opinionated. The porn version almost always shows the penetrator's hands locked behind the receiver's neck, really dramatising that wrestling hold. For real-life purposes, consider that flourish entirely optional. Honestly? Better skipped.
Skip the neck lock. Hands behind the neck can push your partner's chin down, strain their neck, or mess with their breathing before either of you quite realises how much pressure you're applying. Even in wrestling, the full nelson is notorious for neck injuries. If breathing gets squeezed or the neck gets cranked, the bit has gone too far.
The thigh hold gives you the useful parts anyway: legs up, chest to back, deep angle, plenty of leverage. Keep your hands on your partner's thighs or hips instead of behind their head. The neck lock is the bit you lose. Safety is the bit you gain.
Many couples find this gentler hold is more than enough. You can hug around the thighs or waist. It also makes it far easier to release the position quickly if needed: if the receiving partner says stop or starts to slip, you can immediately let go. With hands tangled behind the neck, you lose that instant escape hatch. A tiny tweak has more time to become a proper "ow".
Bonus: Without hands clasped behind the neck, there's more freedom for the penetrating partner to actually do things: caress the receiver's body, stimulate their clit, tease their nipples. The receiving partner might be able to turn their head enough for a kiss. Removing the strict neck lock turns the Full Nelson from a rigid wrestling pin into something more fluid and controllable, the kind of position where you're actually enjoying yourselves rather than white-knuckling through a stunt.
So make "hands on thighs" your default. Don't get hung up on imitating the porno version; a real Full Nelson can be whatever variation works for your bodies.
What Each Partner Does During the Position

For the Receiving Partner (the one whose legs are lifted):
Your main job here is to relax and communicate. You're offering your body to a fairly restrictive hold, and mentally, it can be quite the rush: vulnerable, exciting, maybe a little nerve-wracking. If you're someone who enjoys the surrender aspect of D/s play, lean into those feelings; that's half the point. Still, keep checking your own body. Pain, numbness, panic, or a sharp "wrong" feeling means you say something or use the safe signal. Submissive does not mean mute.
Physically, try not to fight the stretch; it works best if you don't resist the position. Don't hold your breath or go rigid. Brace your belly if it helps your back, then let your arms be boring: thighs, wrists, bed, anything you don't have to fight to maintain.
You'll likely feel extra passive since you can't easily move your hips. Enjoy the fullness, the angle, the sense of your partner's body entirely around you. And don't forget you can still use your voice: moan, talk dirty, guide them. "More pressure." "Slow down." "Just like that." Your verbal feedback is gold when your body language is harder to read while you're folded up. I'd actually argue talking becomes more important here than in any other position; it's your main way to shape what's happening.
For the Penetrating Partner (the one lying below, holding the legs):
You're running the show here. Your job is supporting your partner and keeping the angle and rhythm going. You're part lover, part spotter, literally. Keep a secure but gentle hold on your partner's legs, typically behind the knees or around the thighs. Most of the motion comes from underneath, so pace yourself. Drive from your hips and core instead of trying to bench-press your partner with your arms.
If a leg starts slipping, stop. Reset your feet, regrip, and look at their face: jaw clenched, breath held, suddenly quiet? That's information.
You have the leverage, so don't show off. Start shallow; only add force when their noises and words are enthusiastically inviting it. A grinding motion often feels better and maintains balance more easily than fast in-and-out thrusts. Your arms are busy holding legs, so you might not have hands free for extra stimulation, but you can use your voice, try kisses or bites on any part of them within reach.
This is a very dominant position to be in. If that's your thing, enjoy it, but never forget that you're doing this with your partner, not to them. Ignore their comfort and the whole thing turns creepy fast.
How to Move: Short Strokes, Angle, and Balance
Once you're in a Full Nelson, the way you move together will need to change from your usual thrusting style. What works in missionary will likely just destabilise you here.
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Use Short, Controlled Strokes: In this position, less is more in terms of motion. Grand, deep thrusts can actually backfire by dislodging the whole arrangement or straining both of you. Think shallow pulses or grinding circles instead. Because the receiver's legs are pushed up, even a shallow penetration feels surprisingly deep for them. A few inches of motion creates a lot of sensation; you genuinely don't need to hammer away. Smaller movements also make slipping out, bending awkwardly, or losing the whole setup less likely.
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Find the Sweet Spot Angle: Tiny changes in angle can dramatically alter sensation here, more so than in most positions. The receiver's hips tilt differently depending on how far back they're leaning or how wide their legs are spread. The penetrating partner can experiment with angling their hips up or down; tilting toward the receiver's head versus their feet changes which internal anatomy gets the most stimulation. If you're aiming for G-spot or prostate contact, just the right tilt can make the tip of the penis or toy rub that anterior wall spot perfectly. Communicate about what feels best: "Right there!" / "A little higher", and guide each other to that sweet spot.
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Mind the Balance: The Full Nelson throws off your normal coordination completely. The receiving partner might feel like they could tip sideways if the penetrating partner thrusts too vigorously, while the penetrator is balancing someone's weight on top of them. To stay stable, consider doing this on a firm surface, such as a firmer mattress, or even the floor on cushions, rather than a very bouncy bed. Going slower helps balance too. The penetrating partner can press their head and shoulders firmly into the bed for leverage. If you start to wobble or slip, don't try to heroically power through; that's how injuries happen. Pause and reset. Maybe that means moving a leg, maybe it means coming out and starting again. Nobody can surrender to sensation while feeling like a Jenga tower about to topple, and that goes for the person on top and the person underneath.
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Go Slow to Go Wild: Especially for the first few attempts, err on slower than you think necessary. Build speed or intensity only if it's clearly working. A good approach is to treat the Full Nelson as a series of waves: rock together slowly for 10-20 seconds, try a few faster thrusts if it feels good, then slow down again. Incorporate micro-breaks; nobody says you can't pause within the position. Drop their legs for a few breaths, kiss a knee, say something filthy, then ask if they want them lifted again. Pausing can keep the charge alive.
Often what makes this position so good is the sheer closeness: a slow grind, synchronised breathing, the feeling of being wrapped entirely around and inside someone. And if you find a rhythm that works, ride it. But the moment something feels off-balance or too harsh, ease up. You can always transition to another position to finish, and that's not a failure, it's just good sex.
Why people bother: G-spot, prostate, and power

Physical Pleasure Points: Done right, the Full Nelson creates penetration angles that hit spots not easily reached in other positions. For a partner with a vagina, this pose tilts the pelvis such that the penis or toy rubs against the upper vaginal wall, the belly side. This is where the G-spot sits (approximately 2-3 inches in, on the front wall). Many receivers describe the sensation as an intense, constant pressure on that spot, almost like a perpetual "come hither" motion from within. It also allows very deep penetration, potentially reaching the cervix or the deeper A-spot (anterior fornix). Cervical pressure is bliss for some people and a hard no for others, so change the angle the moment it feels jabby or painful.
For partners with a prostate, whether that's a male-bodied receiver in anal Full Nelson, or any variation involving anal penetration, this position hits the P-spot hard. The penetrator enters from a rear angle, meaning the penis or toy presses firmly into the front wall of the rectum where the prostate sits. One man on Reddit described it as mind-blowing because his boyfriend's naturally downward-curved penis "pressed directly onto my prostate" in this pose. If prostate stimulation is your goal, this could be a winner, provided you approach it carefully and well-lubed (as anal play always should be; I really cannot say this enough).
Regardless of anatomy, tightness is a factor too. With the receiver's legs up and body bent, pelvic muscles often squeeze around the penetration more snugly, similar to how certain yoga positions can make everything feel tighter. The penetrator may enjoy that extra snug fit. Just remember: tighter also means you'll likely need to reapply lubricant to keep things comfortable.
Psychological Thrills: Beyond the physical hotspots, this is where the Full Nelson really comes into its own for anyone who enjoys power dynamics. For many people, this is the actual point.
There's a strong element of restraint and helplessness for the receiver. You can't easily escape until your partner releases you. That can create a headspace of surrender, similar to light bondage or being held down in a safe, consensual context. For those who get aroused by being dominated, manhandled, or held at the edge of overwhelming sensation, this position does it all at once. "I've got you and you're not going anywhere": if that sentence made something spark in you, you now understand why people bother with all the logistics.
That interest is not some fringe oddity, either. In BeMoreKinky's restraint-comfort data, "secure ties you can't escape" was the leading answer at 58.0%. I understand the pull of that phrase completely. It sounds hot because it sounds absolute. The practical warning is that fantasy heat does not make the setup safer by itself. The more immobilised someone is, the more boringly specific your release plan needs to be.
For the penetrating partner, there's an undeniable power rush. Having your partner's entire body in your control, seeing them spread and unable to move much, legs held open: if you enjoy a dominant role, it's satisfying in a way that's hard to describe until you've felt it. And yet it's also weirdly intimate: you're chest-to-back, breathing together, in a full-body embrace coupled with penetration. I think people assume D/s play makes sex less intimate, but that's bollocks. When it works, the trust involved makes it more so.
Alex Comfort put it well in The New Joy of Sex: restraint "enables many people who couldn't otherwise do so to let go to the last degree," and crucially, he notes that one real skill in these situations is learning to distinguish the noises that mean actual distress (a cramp, something pinching wrong, genuine alarm) from "the normal protests of ecstasy." In the Full Nelson, where voices are your best tool, that distinction is worth thinking about before you start. Knowing your partner's sounds is part of what makes this kind of trust erotic rather than just risky.
The weird trust bit: This is where the risk-feeling comes from: one of you is held, and the other has to be worth trusting. Something new can jolt a couple awake, but this position only works if the person doing the holding is paying attention. As therapist Casey Tanner notes, a new adventurous position can bring playfulness and closeness between partners. Checking in on each other, and afterwards feeling like "we actually did that": that's the stuff that keeps a sexual relationship alive.
No orgasm is worth limping into A&E. Leave the room laughing, not frightened.
Props That Actually Help: Pillows, Wedges, Lube, and Toys

One way to bring the Full Nelson down from "Olympic event" to achievable bedroom adventure is to enlist some props and accessories.
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Pillows and Wedges: A firm pillow or sex wedge placed behind the receiving partner's back (between them and the penetrating partner's torso) provides much-needed support. Instead of the top partner relying entirely on core strength and flexibility, the pillow props them up, easing strain on their spine and neck. A wedge under the penetrating partner's hips raises the pelvis, which can help align the penetration angle, particularly useful if there's a height difference. If you own a purpose-made sex wedge (Liberator or similar), use it: have the penetrating partner lie against it so they're semi-reclined rather than flat, creating a natural slope for the receiver to lean on. Even professional porn sets use cushions; they just hide them out of frame. Do the unglamorous version at home and stack folded blankets or towels into a firm bolster.
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Lube, Generously: Lubricant is non-negotiable in any adventurous position, and this one's no exception. Folded bodies rub harder than you expect. Lube before the angle changes and leave the bottle within reach. Silicone lasts; keep it away from silicone toys unless the toy maker says otherwise. Anal play requires generous lubrication regardless of position, so don't even consider Full Nelson anal without it. When you think you have enough lube, add more. I'm completely serious. Then add a bit more after that.
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Vibrators and Wands: Since Full Nelson compromises direct clitoral stimulation (and the receiver often can't reach their own genitals easily in this pose), a vibrator solves that problem nicely. A small bullet vibe held against the clitoris or the base of the penis adds that extra dimension of pleasure. A particularly good choice: a wand vibrator with a long handle, because the long handle means the receiving partner can reach their own bits without needing full range of motion while folded up. Casey Tanner specifically notes that a wand lets the receiver "relax into the position while also receiving enough stimulation to lead to orgasm". For anal or prostate play, a prostate massager or vibrating plug can be interesting to include alongside penetration, though be aware that extra hardware internally might be a lot. For some bodies, double stimulation is heaven. For others, it's too much input at once.
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Cock Rings and Penis Vibrators: The penetrating partner gets something from toys too. A vibrating cock ring stimulates the receiver (if positioned against the clit) while also giving the penetrator vibratory pleasure and firmer erections. It's hands-free, which is particularly useful when your hands are busy holding someone's legs. Just make sure any attachment won't pinch under body weight; smooth designs are best. For strap-on users, consider harnesses with built-in vibratory features for the wearer, so both parties get something from the setup.
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Mirror (Optional): Not a physical prop on your body, but setting up a mirror at an angle can add a mental turn-on that surprises people. The Full Nelson creates a view you don't normally see: total exposure of the receiver and a very explicit penetration angle. Some people find watching themselves in this position very hot; it's like having front-row seats to your own private show. Only do this if both of you are genuinely comfortable with it. Nobody should feel self-conscious when they're meant to be enjoying themselves.
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Restraints (for Experienced Players): The Full Nelson itself is a form of restraint, but some BDSM enthusiasts go further: cuffs on the receiver's wrists, sometimes anchored to their own ankles, effectively locking them into the legs-up posture without the penetrating partner needing to hold as hard. This takes the submissive experience up several notches, but it also means the receiver has zero ability to free themselves. Treat "can't escape" as erotic language only after you have a real-world escape plan: quick-release gear, safety shears nearby, a tested signal, and a partner who will stop immediately. Only consider this if you're both experienced with bondage and have negotiated it thoroughly. If you haven't done bondage before, the Full Nelson itself already provides plenty of that "restrained" feeling without adding actual restraints on top.
Using props doesn't make the sex less authentic. That notion can fuck right off. They make sex better and safer. Grab the lube, switch on the vibe, and make the Full Nelson actually work for your bodies rather than battling against them.
Beginner-Friendly Full Nelson Variations
Sex isn't all-or-nothing, and there are variations that give you most of what makes this position appealing without requiring circus-level flexibility or carrying as much risk.
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The "Half Nelson" (Legs-Only Hold): Simply omit the behind-the-neck lock. The penetrating partner holds the receiver's thighs or calves to keep their legs up but doesn't pin the arms or neck. The receiver can keep their hands free, perhaps holding behind their own knees too. This gives a lighter sense of restraint while still allowing deep penetration. You might find this is plenty hot and never feel the need to go further, and if so, brilliant. It's the version many people can hold long enough to enjoy.
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One-Leg Nelson (Single Leg Hold): If lifting both legs is too much, try one at a time. Penetrator, hook one arm under one knee and lift; let the other leg stay down or wrap your waist. That slight twist can change the angle in a useful way without asking so much of the receiver's hips. You can switch to the other leg partway through. One leg in the air still gives that "held open" feel and the depth change, but it's much more manageable to maintain, especially for longer sessions.
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Supported "Nelson" (Wall or Headboard): Bring furniture into play. The penetrating partner sits propped against a sturdy headboard or wall, semi-seated. The receiver gets on top facing away and leans back. Now instead of arms doing all the lifting, the receiver can rest their raised legs against the wall or headboard on either side. The penetrating partner still holds for stability, but there's far less pressure on the neck and back. This works equally well on a couch: the penetrating partner sits deep in the cushions, receiver on top facing away, leaning back against the backrest. You've anchored the pose, making it far less wobbly and much more achievable with differing body sizes.
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Legs-Together Variation ("Clamp" Position): Have the receiver keep their legs pressed together while lifted, instead of a wide V spread. The penetrator holds that bundle at the shins or ankles against their chest. This creates a very tight squeeze around the penis, and it's actually less strain on the receiver's hips (legs together is easier than legs apart for some). It changes the angle to a more downward stroke which some find hits the G-spot beautifully. It might not look exactly like a wrestling nelson, but functionally you get deep penetration and limited movement for the receiver, and it feels fantastic.
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Side-Lying "Nelson" (Bent Spoon): A lot of people find side positions far easier on flexibility, and this one's great for when you want the sensation without the athletics. Start in a spooning posture, with the penetrating partner behind. The receiver lifts their top leg and brings it toward their chest. The penetrating partner hooks that top leg with their arm, holding it like a half-nelson. The bottom leg stays relatively straight for stability. You've got something like a side-half-nelson: one leg up, partner's arm under it, other arm free to wrap around the receiver's torso. Penetration from behind in this position can be deep, with angles similar to doggy, and the hold gives extra tightness. Because you're horizontal on the bed, there's no balancing act, just the open, pinned feeling without the wobble.
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Reverse Cowgirl Tease-Out: More of a technique than a static variation. Use reverse cowgirl and Full Nelson interchangeably within one session. Start with normal reverse cowgirl riding. When you're both warmed up, the receiver leans back and the penetrator grabs the legs for a partial Nelson, just for 4-5 thrusts of super deep penetration. Then the receiver sits back up to ride normally and recover. Repeat that cycle. Consider it interval training: you get the occasional intense deep strokes and the psychological thrill ("Fuck, so deep, you've got me") without committing to the position for extended periods. Many couples actually use the Full Nelson exactly like this: a daring accent, not the main event. That may be the version that makes the most sense in an actual bedroom.
Use these as stepping stones, or stop at the version you like. If you invent your own quarter-Nelson that makes you both moan with delight while the porny full version would have just made you wince, you made the right choice. Combine the supports: pillow plus one leg, wall plus legs together, whatever lets you keep the heat without the strain. If both of you are into it, it counts.
How to Transition Out Before It Gets Uncomfortable

You've gotten into the Full Nelson (or a version of it), it's going well, but you know you can't hold it much longer, or it's starting to tip from intense into too much. Know when and how to get out gracefully, before anyone tweaks a muscle or hits genuine discomfort. Ending on purpose doesn't have to break the mood.
Set Expectations: It helps enormously if both partners go in with the understanding that you'll try this for a bit, but probably won't finish in this position. That removes all pressure. You can even agree roughly: "We'll do this for a minute or two, then switch to something easier to come in." When it's time to shift, nobody feels disappointed. It was the plan all along.
Recognise the Signs: The penetrating partner will typically start to feel fatigue in their arms, core, or legs fairly quickly. The receiver may feel hip strain, heavy legs, tingling, or numbness. Say something as soon as those signs show up. A simple "Let's change it up" or the safeword if it's becoming urgent. Don't wait until your thigh spasms or your back screams; by then you might have a minor injury. Leave it while it still feels hot, not after it has turned into endurance training.
Gentle Release: Come out by reversing the entry steps, and do it slowly. If hands were behind the neck, unclasp first. The penetrating partner slowly lowers the receiver's legs from vertical. Guide the receiving partner back into a sitting position astride you, easing them forward until they're upright again. Take care that nothing jams or bends awkwardly during this transition; coming out of a pretzel can cause a sudden slip-out. The penetrating partner might want to hold the base of their shaft (or the dildo) while transitioning to keep things aligned. If something's tangled, like an arm caught under a leg, pause and communicate. A laugh and patience go a long way here.
Transition to Reverse Cowgirl or Missionary: The easiest exit is back to reverse cowgirl. Once the receiver is upright on top again, you're in a normal riding position. They have their control back and can grind, bounce, or set the pace to finish. Alternatively, the receiver can swivel around to face the penetrator for cowgirl, or dismount entirely and shift into missionary with legs up on the partner's shoulders. If the penetrator is fatigued, having the receiver roll to their back for legs-up missionary gives a similar deep angle but with gravity working differently. A solid finisher after the Full Nelson effort.
Transition to Doggy or Prone: If you want to maintain the from-behind angle but in an easier form, you can transition from Full Nelson to prone bone or doggy style. The receiver simply rolls or repositions onto all fours (or flat on their stomach for prone), and the penetrator moves behind. You keep the rear-entry depth and that dominant/submissive energy, but in a far more sustainable position. Many people find this is a natural and satisfying way to finish what the Full Nelson started: all of the D/s energy, none of the acrobatics.