Everyone knows those people who can eat a ton all day every day and never gain a pound cause they have a high metabolism. Nowadays this is obviously a perk because you stay skinny without working at it and shit. I was thinking though, what about back in like the hunter-gatherer times. Wouldnt the people with slow metabolisms need less food and therefore be more efficient and overall better survivors? Are the fatasses with really slow metabolisms acutally built better than all the high metabolism people?