Question

we can not stand at one place for a long time . how then we sleep for 6 to 8 hours

Answer 1

If we r standing at one place without moving our body loose energy against to gravitational force so we feel its difficult

Answer 2

hi,

Because gravity is tough on us when we are vertical, first of all. Blood circulating all through the body has to get back to the heart continuously, and the feet are farthest away. Valves in the leg blood vessels open to help it pump upward and close to keep it from falling back down. That’s why our feet hurt so much when standing still for a long time.

Walkers/runners have an easier time because the motion helps keep blood circulating.

Lying down is easy. Gravity is exerting its force pretty equally along the body.

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