Being a woman, I find myself scratching my head at a lot of things men do. One thing in particular intrigues me. Why do men pound their chests when they're playing sports? Is this some kind of alpha male/caveman leftover thing? I've seen a lot of athletes do this...get a basket, pound your chest...hit a home run, pound your chest. Sometimes with one fist, sometimes with two.
Why do men pound their chests? When did this start?