Humans on a high-gravity Earth would be shorter and flatter, with denser bodies to withstand the increased force. The air would also be significantly thicker.
Here's a breakdown of how increased gravity would impact human physiology, based on the provided reference:
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Shorter stature: To counter the compressive forces, evolution would likely favor shorter, stockier individuals.
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Flatter bodies: The overall shape would adapt to distribute weight more effectively, making humans "even flatter" than they currently are.
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Denser bones and muscles: Increased bone density and muscle mass would be essential for movement and support under higher gravity conditions. This would allow the body to function without breaking under its own weight.
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Cardiovascular Adaptations: Stronger hearts would be required to pump blood against the increased gravitational pull.
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Respiratory System Adaptations: "The air on this Hefty Planet would be super thick. Because there's a stronger Force pulling it down breathing would feel like inhaling soup however weird that," according to the reference. The respiratory system would need to evolve to efficiently extract oxygen from a denser atmosphere.
In summary, humans on a high-gravity planet would likely be shorter, sturdier, and denser than current humans, with adaptations to cope with a significantly thicker atmosphere.
