BerniceC: Seems to me all clothes wear out over time. Better made ones last longer, but they all wear out from use eventually. If you wear that T-shirt as much as you say, then it sounds like you've had some good use out of it. Working out in clothes not made for that use will wear them out real fast. Plus you have to launder them more times. I'm sure the repeated washings, soap, and detergent have taken their toll on your T-shirt.