They're lean. When I played football in high school, one of our coaches asked my friend if he "could take a gorilla." Called out in a crowded locker room by a much larger, older, and more intense man, my friend paused. He obviously couldn't, but you don't exactly go about announcing your weaknesses in a room full of aggressive teenage boys. The coach sensed the moment of hesitation and erupted "OF COURSE YOU COULDN'T! THEY HANG FROM TREES ALL DAY. A GORILLA COULD COME IN HERE AND WHOOP YOUR ASS!"

To this day, I have absolutely no clue what the hell our coach was talking about, but his statement remains as true as ever.