Vertebrates: evolve a horizontal spine

Spine: I sure am glad I’m not under constant compression

Some ancestor to humans: lmao watch this

Nah the human body can do something no other body can on earth, and that is throw really fucking hard. The reason we can do a baseball pitch style throw is the rotating shoulder blade skeletal structure we have.

With only a bit of weaving of natural fibers a human can make a sling that can deliver rocks at a lethal velocity to almost any animal (especially when a group of humans are throwing).

Also the human skeletal structure is far more flexible than most four legged animals. We can wrestle and apply our core muscular body strength in much larger range of directions and motions than most other non-apes even if we are much less strong than them. Think about how a dog can’t really rotate its legs outside of a narrow range at the shoulder blade, this massively reduces how a dog’s skeletal structure can move and apply force from the dogs core stomach muscles to its legs (if you have ever play wrestled with a dog you know once you get over their back and can keep their torso from twisting you got ‘em).

So yeah human skeletal structure has some unusual benefits, another I didn’t get into is the human bodies genius ability to…… walk run.

No seriously, being two legged the way locomotion works a human can smoothly speed up from a walk to a run whereas a four legged animal has to at some point discretely transition from a walk to a trot. All the human has to do is go justtttt fast enough that the four legged animal has to make the energy jump to stay in a trot which is much less efficient at minimum speed energy and heat generation wise. Eventually the four legged animal becomes exhausted and human wins (in probably the lamest way possible but a meal is a meal I guess).