There's a difference between over-training and over-exercising. Over-training can be you're trying to do something at high performance, but when you're over-exercising it just means that you don't have a life. And there are obviously people who go to that extreme.
Mark SpitzIf you are relaxing and subconsciously thinking about your coming race, you are going to perform at just about 100 percent efficiency.
Mark Spitz