We can be pretty still, and ALMOST perfect, but…not quite. There’s still those little slight movements we all have even when trying our hardest to stand/sit still
What causes those uncontrollable subtle movements exactly? Hope this question isn’t too dumb lol
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Some of the stillest people in the world can’t stay perfectly still even when supported by the ground. Military snipers have to compensate for their heartbeat when they fire and ensure the bullet is fired between heartbeats. This is because the human body is filled with a bunch of tubes with changing pressure. They expand and contract slightly with each cycle of a heartbeat.
Every beat of your heart can push outwards on your blood vessel wells with 1lbs of force per square inch. It’s not much, but it’s enough and it’s fast enough that your muscles can’t compensate for it effectively.
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