But Cannon pays a hefty price for his busy schedule as he can only fit in just a few hours of sleep around work and his duties as a dad.

He tells CNN chat show host Piers Morgan, "If I'm on the west coast my day starts around 1.30am to broadcast my radio show in New York... probably in the studio until 7.30am, then a few hours in the gym or visiting the kids... then off to my office. America's Got Talent live television, then the music studio, interviews...

"I don't sleep! Maybe two hours a night, then in the breaks at America's Got Talent, I get an hour's nap, I try to get about four hours throughout the day. I'm still running on adrenaline."