Most of the folks I hang with on a daily basis are into sports (runners or involved in the sport I coach for youth fitness), or have terminal degrees (PhD, MD, etc).  You and I run in the same sort of crowd, I imagine.  I have more friends with PhDs than I do friends who "only" have a Bachelor's degree.  In fact, I think I know more people with multiple advanced degrees than I do people who didn't go to college at all. Yes, you are correct.  The high-educated folks I know are, by and large, very fit.  They lift, hike, run marathons, do triathlons, ride their bikes to work rather than drive, etc.  Not a single fatty among them.