Oh, It Hurts Some astronauts report losing their fingernails on spacewalks because of bulky gloves that cut off circulation and chafe against their hands. To avoid this inconvenience, a couple astronauts have taken to ripping off their own fingernails before reaching orbit. NASA From Popular Science:
Did you think drinking your own urine was bad? To truly test whether you have the right stuff, imagine ripping out your own fingernails, on purpose.
A couple of astronauts have done this before going into orbit, because they figure it’s better than losing them inside chafing, unwieldy spacesuit gloves, according to Dava Newman, director of MIT’s technology and policy program and director of the university’s Man Vehicle Lab. Newman, who has studied space-related injuries, told a group of journalists at MIT that some astronauts have reported losing their fingernails during spacewalks. Fingernail trauma and other hand injuries are spacewalkers’ biggest complaint, she said.
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