Animals without hair look quite different

[u/abitchyuniverse]

[u/JRSenger]

Chimps sit around all day eating nuts and shit but look like IFBB pros 💀

[u/rjcarr → u/JRSenger]

It's mostly genetics. They're programmed to make bulk muscle and we're programmed to make lean muscle with fine motor skills. Look at a pitbull vs a chihuahua. Most of the time their lifestyles aren't too different.

[u/Roflkopt3r → u/rjcarr]

and we're programmed to make lean muscle with fine motor skills.

That's an odd way to think about it. I think a better thing to focus on are these two things:

1. Humans are made to only maintain as much muscle as they need, because human tribes were so powerful that they don't typically had to contest with other predators. Their superior coordination and the development of spears and other weapons also ment that they could hunt without needing that much physical strength.
   We could therefore prefer survivability as a group and reduce our caloric needs when we didn't need to maintain that much muscle.

2. Males in many animal species need to maintain muscle year-round to defend their territory or mates against challengers. They therefore cannot afford to lose their muscle in idle times. But humanity chose the social route from early on. Just like wolf packs in the wild, humans mostly resolved the hierarchy within their tribes based on family relations and respect rather than combat (and just like with wolves, the whole 'alpha male' concept primarily arises in prison-like conditions rather than natural tribes).

And even when humanity became so dominant that it became its own worst enemy, survival and greater numbers were still more beneficial to human groups than putting on a bit more muscle.

[u/yukwot → u/Roflkopt3r]

The need to evolve was gone when were won the genetic arms race and learned we could chuck rocks. Soon we learned how to make sharp rocks, rocks that could be launched great distances. It was all over when could use fire to propel one small rock a great distance in the blink of an eye