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How This Astronaut Builds Muscle to Survive in Space – menshealth.com
Former Navy SEAL and Harvard med school grad Jonny Kim, M.D., relies on two exercises to forge total body strength.
Faced with zero gravity, a young, healthy adult in space can lose up to 20 percent of their muscle mass in five to 11 days. That’s the hell that awaits U. S. Navy Lieutenant Jonny Kim, 36, who recently completed NASA’s astronaut-candidacy training for his potential first trip to space.
To figure out how he’ll adapt, Kim spends workdays in the Johnson Space Center’s zero-g simulator, the Neutral Buoyancy Laboratory, a 6.2-million-gallon pool. Underwater lies a mock-up of the International Space…
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