eli5: How come gorillas are so muscular without working out and on a diet of mostly leaves and fruits?
In: Biology
Genetics.
Their genes determin everything from gender to height.
Most of these genes have been selected through a process known as natural selection.
One really good gene for the survival of a gorilla is one for muscle growth. Also, gorillas are a lot heavier than us and they move around on their arms and legs. This amounts to a pretty good work out.
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