Our bodies were really built to work in gravity at NASA ... helps our heart to stay strong by having to pump the blood against gravity. So when you take that force away. You all of *** sudden ...
On Earth, our muscles constantly work against gravity, keeping us upright and supporting our movement. In microgravity, however, the need for muscle exertion diminishes drastically. Over time ...
"Our bodies were really built to work in gravity," Dewitt said.NASA's Countermeasures ... her training for a triathlon from space, competing against CNN's Dr. Sanjay Gupta, who was on Earth." ...
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