Assuming you take a living thing from Earth and move it somewhere with lesser gravity…
– … the muscles and bones are no longer exercised by gravity and will atrophy
– … blood and other fluids will no longer flow properly as the circulatory systems account for gravity
– … the heart, no longer affected by gravity, will change shape to a more oval form and suffer more frequent faults
The Soviet Union’s space experiments have shown that these effects are mitigated by increased exercise, allowing astronauts to withstand microgravity for about a year.
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