My hams have always been tight...it may simply be because I'm tall (6'3"). I wonder if running helps or hinders. I don't stretch. But I don't need to, for the running -- which is more like plodding, if the elderly women who pass me are any indication. I always stretch before doing deadlifts, though -- a solid 10 minutes of moves I learned from a competing powerlifter. But that stretching isn't ham-specific. I want to be fit but don't have the time to be jacked. Plus I'm 48 -- what are you gonna do?