See Justin Bieber's Working Out Routine With US Magazine!Video

Justin Bieber is working it out.The 17 year-old singer is putting a lot of effort into his health and his physical stamina so he can perform nightly on stage. Bieber works with a personal trainer and eats pretty healthy.His vocal coach, Jan Smith said: Although Bieber occasionally indulges in junk food like Doritos and Fruit Roll-Ups, “He’s pretty good about his diet,” Smith said.Even Rihanna has