While you are sinking into you soft, pillow-top mattress -- or pile of rubbish -- there are a handful of human beings in space who take to their nightly respite a little differently, by strapping themselves into a zero-G space coffin. Apparently it's better than it sounds.
Chris Hadfield, everyone's favourite ISS explain-gineer offers up the details. Weightless or not, it seems like it'd be weird to trade in a traditional bed for a Velcro sleepvest, but the whole totally-relaxed-anti-gravity zombie thing does look pretty relaxing. Maybe someday us normal folks will get a chance to try it out. [YouTube]