Imagine that you want to exercise on a treadmill. You step onto the machine and select your desired speed. As the belt starts moving, you start walking and eventually running. Your feet rhythmically hit the belt, and you get a nice workout.
In space, it isn’t that simple.
For astronauts living in space, like those who reside [...]



Full story at http://spacefellowship.com/2009/12/22/astronauts-test-glenn-exercise-harnesses/
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