"I brush my teeth, I wash my hands. Why would anybody wash their hands before they go to bed? I don’t know. And the pillows are supposed to be pointed a certain way. The open side of the pillowcase is supposed to be pointed in toward the other side of the bed. I don’t know why."
Michael Phelps sleeps in a chamber that's 8,500 to 9,000 feet above sea level.
By placing his bedroom at this high altitude, Phelps decreases oxygen, which forces his body to work harder to produce more red blood cells and deliver oxygen to his muscles. It also helps Phelps increase his endurance performance and prepare himself for competitions at high elevations.
Inventor Nikola Tesla never slept for more than two hours a day.
Tesla got more out of the day with his limited sleep schedule. He claimed to never sleep for more than two hours a day and reportedly once worked for 84 hours in a lab without sleep.
"I do not think there is any thrill that can go through the human heart like that felt by the inventor as he sees some creation of the brain unfolding to success ... Such emotions make a man forget food, sleep, friends, love, everything," he said.