To the world, Michael Jackson was a musical genius. But behind closed doors, Jackson suffered from bouts of insomnia as he focused on conjuring enough energy to practice for his tour. Although Jackson's 3 a.m. phone calls to 'This Is It' choreographer Travis Payne may have been a warning sign, Payne told PopEater that he and director Kenny Ortega suffer from insomnia too, so they overlooked Jackson's symptoms. The seriousness of Jackson's health was made clear when the music icon died unexpectedly at age 50 from an acute intoxication of the anesthetic propofol, which allegedly helped him sleep.

Michael Jackson and Travis Payne