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Space adaptation syndrome acclimation

Astronauts and Canadian space medicine researcher and physiologist Douglas Watt (top left) acclimating themselves to space adaptation syndrome in a KC-135 airplane that flies parabolic arcs to create short periods of weightlessness. In 2001 and 2002, Watt of McGill University in Montreal studied how the human body adapts to weightlessness through his H-Reflex experiment. This was the first medical experiment completed on the International Space Station (ISS). (Source: NASA's Marshall Space Flight Center. Public domain.)

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