The BBC has a new video describing the suit, which has been years in the making. Called the Gravity Loading Countermeasure Skinsuit, it has hundreds of Spandex-like layers, King's College London physiologist David Green told the BBC. It even compresses more firmly lower down on the legs, which normally feels more pressure from the weight of the body above it, than upper regions of the body. Green and his colleagues envision astronauts will wear the suit while hanging around inside spacecraft, thus getting a dose of gravity-like pressure while they go about their daily tasks. The suit should work in conjunction with the exercises astronauts already perform to stay healthy in space. Even with the exercises astronauts perform now, they lose bone and muscle mass they live in a low-gravity environment. That can make a return to Earth painful. Astronauts may even have pain while in space, as their spines lengthen in the absence of gravity.