Give Paleolithic hunter-gatherers a little more credit than that. They were actually very efficient, very successful hunters. They would kill large numbers of herd animals, and build up stocks of meat and fat. They supplemented this with whatever small game they caught and whatever plant food they gathered. At some points during the Ice Age, Cro-Magnons may have eaten only about a cupful of vegetables per year, the rest of their diet being meat and fat.
Originally Posted by Dualhammers
SW (1/4/12): 326 lbs. (48% BF)
Steak and Eggs SW (5/11/13): 198 lbs.
CW (5/20/13): 191 lbs. (23.5% BF)
GW: 185 lbs. (~15% BF)
6 lbs. to go, 8.5% BF to go