As some of you know, I regularly run and practice martial arts. The first and third putting a lot of stress on my knees. I found today during a martial arts session that the way my thigh points during the lower stance (80% weight on front foot) that I put far too muh stress on my knees which could build up to me wrecking them as I get older. This isn't something that running helps because even more stress is put on my knees, and am starting to experience regular pains after exercise. Its something I wanna put right because I don't want knee problems before I grow older, and want to remain fit and active at the same time. I can fix what I'm doing wrong in my martial arts, but it will take time, and I'm afraid the damage might have already been done because I've been doing this for the past 6 or so years.
Feel free to discuss problems with your joints or bodies as a result of exercise.