Gravity is the original sin.
“Adam,” the name of the original human, derives from the Hebrew word for ground/earth (as well as “human” comes from Latin “humus”; ground, earth)
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As lifeforms evolved away from the sea to dwell on land, they were no longer sustained and floated by the water; they had to start working—expending much more energy just to stand up and walk around—to fight the gravitational pull.
This is the Fall.
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“Cursed is the ground because of you; through painful toil you will eat food from it all the days of your life. It will produce thorns and thistles for you, and you will eat the plants of the field.”
— God to Adam in Genesis 3:17-18