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Students train like an astronaut during this challenge.
Watch space shuttle astronauts work out.› View This Video
"Each Station crew member is scheduled for an hour of cardio (either treadmill or cycle ergometer) and an hour of resistive exercise (the equivalent of weightlifting) each day while we are on orbit."
Get the skinny on how astronauts build a better body for space and what it means to you.
Find out why exercise is so important to the astronauts who travel into space.