I’m talking about before we figured out we could grow vegetables and fruits. Early humans are often shown as being fit and in shape, yet our diet pretty much only consisted of meat. We were hunters. So why the hell were they so fit? I thought a healthy diet mattered more than just being active constantly?
I mean meat is high on protein which is what you need to build muscle mass which is one of the requisites for being fit. Then running around all day chasing animals to eat them is gonna give you some really insane cardio, plus developed muscle from carrying around the prey and the hunting gear. So I have not idea what are you talking about, also pretty sure ancient humans already knew about edible plants and fungi.