How do humans not die when they’re in space/0 gravity environment
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Our body functions don’t rely on gravity to work. Blood flows through our body using pressure from the heart, the lungs operate using negative pressure created by the diaphragm, and our digestive system works using muscles.
The lack of gravity does have adverse affects on our muscles, causing them to atrophy from lack of use. That’s why astronauts need to work out for two hours every day, to avoid losing muscle mass.
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