muscle mass | scienceinfo.net

Myth of the century: Eating more protein makes the muscles firmer, not fat
While carbohydrates and fats have been condemned for years, protein is still almost completely unscathed.
After being in outer space, how do astronauts change when they return to Earth?
Not only are they subjected to height changes, astronauts also have to deal with other major changes in the body in a zero gravity environment.