Michael Phelps

 Michael Phelps said SLEEP is the secret to his success!

“At a very young age I learned how important sleep was,” says Phelps, who spoke to CNBC about his training habits.

"I really can’t say it enough. I don’t think people really pay enough attention to how important sleep is."

https://www.cnbc.com/2017/02/14/olympic-hero-michael-phelps-says-this-is-the-secret-to-his-success.html