Astronaut exercising on the ISS. NASA astronaut Sunita Williams (born 1965) exercising in a bungee harness on the Combined Operational Load Bearing External Resistance Treadmill (COLBERT) in the Tranquility node of the International Space Station (ISS). Astronauts in space must follow intensive daily exercise regimes to reduce the muscle atrophy and loss of bone tissue that occurs in free fall. Williams was on the ISS from July to November 2012,as flight engineer for Expedition 32 and then commander of Expedition 33. In September 2012,she completed the first triathlon in space. Photographed on 4 August 2012 | |
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Credit: | Science Photo Library / NASA |
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