Based on the archeological evidence, id say quite alot of meat. They didn't paint pictures of cucumbers on their walls, and there are so many bones you could make a castle.
However, I dont think they would have eaten large game everyday, based on what I have heard speculated, and much of evidence of traps, id suggest that the majority of meat was small mammals, birds and fish. Those are more reliable than large game hunts, even though the return is less, you wouldnt want to starve pinning all your hopes on something so difficult.
As for only eating animals after activity??... We should be more active in general. But fish and birds dont take alot of energy to catch. More thinking and effort. You set a dozen or so traps across the bush, you'll get something each day of trap re-setting 8 times out of 10.
They certainly wouldnt have eaten beef everyday. They would have eaten a large variety of meats, with probably little resemblance to cows.
Having watched a few docos now about the stone age, and really thought about it more, I cant beleive anyone is anti-meat. It makes no sense, given we have clearly survived on it as our staple since our inception, and most hunter gatherers still do. We didnt make spears and bows and arrows to hunt potatoes!
Perhaps meat is unhealthy in the context of grain fed animals, vegetable oils, and a sea of acellular processed grain carbohydrates? Maybe even beef isnt the idea meat for us to eat? (I dont really eat it myself). IDK, all i know is that humans are supposed to eat lots of meat and also plenty of veg.. I cant see how that could be untrue if its been a central part of our diet for so long.
There may well be some wisdom in one idea- the occasional meat free meal, or low meat meal.
The large game hunt was very unreliable. Sometimes the small game traps would come up empty. If one didnt live on the coast, there would be no shellfish to gather. That only leaves bugs for "meat", which arent often too palatable, and veg.
The occasional meat low meal, or fat low meal is not out of the question evolution wise IMO.