What gravity can humans survive?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
Humans can survive approximately 0.3g to 2g for extended periods, with 1g being optimal since we evolved here. Moon gravity (0.16g) would cause bone/muscle loss over time. Mars gravity (0.38g) might be sustainable with exercise. Above 2g causes severe cardiovascular strain. Brief exposures can handle more: trained pilots withstand 9g for seconds, and crash survivors have withstood over 100g for milliseconds. The direction matters too—horizontal g-forces are more tolerable than vertical.
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