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.

If you want to be Mark Spitz then go for it. If you want to be Michael Phelps then you'll have to work for it. Nobody should wake up to a lower expectation of themselves.

It has nothing to do with swimming. That happens to be my sport. I'm trying to see how far I can go

I am going to sit there and watch Michael Phelps break my record anonymously? That's almost demeaning to me. It is not almost - it is.

Because a known fact is better than an unknown fact.

Past performance speaks a tremendous amount about one's ability and likelihood for success.

When I went to the Olympics, I had every intention of shaving the moustache off, but I realized I was getting so many comments about it — and everybody was talking about it — that I decided to keep it.