The zero-gravity sleep position, which can be achieved with the help of a specialized bed, entails sleeping with your head and legs elevated, and your knees resting at an angle, says Dr. Mara ...

The zero-gravity position originates from a series of posture standards developed by NASA for astronauts. In weightless environments such as spaceflight, the body assumes a “neutral body posture ...

In the zero gravity position, your body is placed at a 120-degree angle, with your head, torso, knees and feet slightly elevated above your heart and stomach.