To each his own, I guess. When I was younger, I had groin issues from time to time, and it was when I didn't stretch before-hand. <_< All pro sports teams still stretch before a game or practice, so it can't be that bad, can it? These teams have the best of the best as far as fitness personnel is concerned, right? I'll keep strecthing until they all stop. :P they warm thier muscles up by doing various things prior to stretching. If they go directly to the trainer for strecthing the trainers usually do a good massage to the area to get the blood flowing.