CNN Vital Signs with Dr. Sanjay Gupta May 30, 2015 18:55:00
We've added. >> right. double. >> that's pretty good, huh? >> that is good. they would feel that? >> it feels just like that. >> that's great. >> reporter: the two main goals for this machine are bone and muscle health. in zero gravity, there's no weight pushing down on your bones, making them weaker. the astronauts use this to prevent bone and muscle loss. >> are they pretty into it? >> most of them are very into it. they have an idea that this is what's going to keep them from becoming brittle or turning into jello when they come back, so they understand the importance of these machines, all...
Source: archive.org