Mystery #4Tier 2keeping fit in space
Why do astronauts have to spend hours exercising every single day in space?
Every day in space, astronauts strap themselves to machines and work out for around two hours, whether they feel like it or not. It is one of the most important things they do, treated more like a medicine than a hobby. On a station where everything drifts about and nothing feels heavy, that seems like an odd thing to bother with. Why do astronauts have to spend hours exercising every single day in space?
Your guess
What do you think all that daily exercise is actually doing for an astronaut's body?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
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