If you think your workout is reaching a plateau, don't complain to the men and women in space. They have to constantly work out to stave off the loss of muscle tissue.
People living in zero-gravity can lose up to 5 percent muscle mass a week. Yikes! That's why working out is not just something astronauts do because they had a double cheeseburger with onion rings for lunch. Curious about what a space workout looks like?
Canadian astronaut and commander of the International Space Station Chris Hadfield has become something of a social media darling. Whether he'sor posting , the Internet can't get enough of him. Check out this neat video of his workout in space that he is dubbing "The Hadfield Shake."