You know, I rarely stretch after exercise and almost never before. I may do a small stretch after, but from what I understand, stretching before lifitng can cause problems, and it is better to go very light and work your way up to the weight you will be lifting instead of stretching. If I squat heavy, deadlift heavy or sprint, I rarely stretch after. If I do it is light. It doesn't mean I am right, but I am not sure why people obsess over stretching unless you are doing something like ballet or an olympic sport. But then again, my muscles are sore almost everyday.