adeel

Rashad Jennings sleeps in a hyperbaric chamber, which is inflated with pure oxygen. Dwayne Johnson sleeps three to five hours every night to fit in two rigorous exercises. Cristiano Ronaldo claims his sleep routine allows him to be more alert and energetic on the field. Tom Cruise sleeps in a "sanatorium," which is a soundproofed area where he may sleep without being disturbed. Nikola Tesla slept for only two hours a day, and his lack of sleep likely led to his demise. Some individuals require complete stillness; others find it unpleasant and require some sounds to sleep.