Zero Gravity Bed Position: What It Is and How to Use It
The zero gravity bed position is a preset on most adjustable bed bases that raises your head and your knees at the same time, leaving your legs slightly above heart level and your torso tilted back. The goal is to spread your body weight across the whole mattress instead of loading it onto your hips and lower back. On most bases you get there with one button, usually labeled ZG on the remote.
What the zero gravity bed position looks like
Three things happen at once:
- The head section lifts to a modest incline — enough to raise your shoulders and upper back, not enough to sit you upright.
- The foot section lifts so your knees bend and your lower legs come up roughly level with or slightly above your hips.
- Your torso and thighs end up at an open angle, somewhere near 120 degrees rather than the flat 180 degrees you get lying on a plain frame.
The result looks a bit like reclining in a good lounge chair, except the mattress bends with you, so there is no gap behind your knees or under your lower back. That contact is the whole point: more of your body is supported, so fewer spots carry a concentrated load.
Where the name comes from
The name is borrowed, not literal. In weightlessness an unsupported body does not lie flat — it settles into a relaxed posture with the hips and knees slightly bent. NASA documented this as "neutral body posture" when designing crew workstations, and adjustable bed manufacturers adopted the term for the preset that approximates it on a mattress. A zero gravity bed does not remove pressure the way orbit does; it repositions your joints so your own weight is spread more evenly.
How to set the zero gravity position
If your remote has a ZG preset
Press it once. The base drives both motors to factory-set angles and stops. On bases with programmable memory positions, you can adjust from there and save your own version — worth doing, because the factory preset is a compromise aimed at an average body.
If you are setting it manually
Work from the feet up. Most people overshoot when they start with the head.
- Raise the foot section first until your knees are bent and your lower legs sit level with or just above your hips.
- Then raise the head section slowly, stopping when your lower back feels supported rather than arched or folded.
- Check the small of your back. If you can slide a flat hand into a gap there, the head is up too far relative to the feet.
- Save it to a memory button if your base has one, and give it a few nights before you judge it.
Why people use it
The honest answer is comfort and preference. People who like the position usually cite the same handful of reasons: their lower back feels less loaded, their legs feel less heavy after a long day on their feet, and reading in bed no longer requires a stack of pillows.
If you are considering an adjustable base because of a health condition — back pain, reflux, circulation, breathing, anything — talk to your doctor about whether an inclined sleeping position is appropriate for you and what angle to aim for. We sell beds, not medical advice, and the right answer there is genuinely individual.
What you need to make it work
An adjustable base
There is no way to get true zero gravity on a static bed frame. The position requires two independently driven sections, head and foot, moving together. Most modern bases include ZG as a preset alongside a flat position and a lounge position; higher-end models add massage, under-bed lighting, USB ports, and wall-hugging travel that keeps your nightstand in reach as the head rises. You can see the range in our adjustable bases collection.
A mattress that bends
This is the part people miss. The base articulates, but the mattress has to follow it without damage. Memory foam, latex, and most modern pocketed-coil hybrids flex well. A traditional innerspring built on a connected coil unit, or any mattress sitting on a rigid box spring, does not — forcing it into a bend can damage the coils and void the warranty. If you are keeping your current mattress, check the manufacturer's stated adjustable-base compatibility before you buy a base.
A frame that accommodates the base
Adjustable bases either stand on their own legs or drop inside an existing bed frame, provided nothing rigid is in the way. Platform beds with removable slats usually work; frames with a fixed solid deck usually do not.
Zero gravity when you share a bed
A single king-size base moves as one piece, so both sleepers get the same position. If one of you wants zero gravity and the other wants flat, you need a split configuration: two twin XL bases side by side under two twin XL mattresses, sold as a split king. Each side has its own motors and its own remote. You can browse the pairings in our split king adjustable bases.
Two practical notes. A split king has the same overall footprint as a standard king, so your room does not change, but your bedding does — you will need two twin XL fitted sheets or a split-king sheet set. And a split king leaves a seam down the middle, which some couples never notice and others dislike; a mattress-width pad or a foam gap filler closes it.
Is it worth it?
If you already sleep well flat and never read in bed, a zero gravity preset is a feature you will use twice and forget. If you routinely prop yourself up with pillows or spend evenings in bed with a laptop, it changes something every night. Either way, the position is hard to evaluate from a description — two minutes lying in it tells you more than any article, including this one.
Frequently asked questions
What does zero gravity mean on an adjustable bed?
It is a preset that raises the head and foot sections together so your legs sit slightly above heart level and your torso reclines, distributing your weight across the mattress instead of concentrating it at the hips and lower back. It is named after the relaxed posture the body takes in weightlessness, not a claim that it removes gravity.
Can you sleep all night in the zero gravity position?
Yes. Many people leave the base in that position overnight, and the bases are built for it. Others use it for an hour before sleep and then flatten the bed. Both are fine. If you are a side sleeper, expect to lower the head angle from the factory preset, since a steep incline tends to feel worse on your side than on your back.
Do I need a special mattress for a zero gravity base?
You need one that flexes. Memory foam, latex, and most pocketed-coil hybrids do. Traditional connected-coil innersprings and mattresses paired with a rigid box spring generally do not, and bending them can damage the mattress and void its warranty. Check the manufacturer's compatibility note before pairing.
Can I get the zero gravity position without an adjustable base?
Not really. A wedge pillow can incline your upper body, which is the easier half of the position to imitate, but nothing static holds your knees raised at the same angle all night without sliding. A wedge is a cheap way to find out whether you like sleeping inclined before committing to a base.
Do both sides of a split king have their own zero gravity control?
Yes. A split king is two independent twin XL bases, each with its own motors and remote, so one side can be in zero gravity while the other stays flat.
Try it before you buy it
This is a position that has to be felt. Come into our Glendale showroom and spend a few minutes on a base in zero gravity — on your back, on your side, with the head angle up and down. It takes about five minutes to know whether it is for you.
Every mattress we sell comes with a 120-night sleep trial, and we offer free delivery and setup across the Los Angeles area. If you would rather shop from home, start with our adjustable bases and call us with questions.