Justin Bieber rocks one of the pieces from his Drew House clothing collection as the 25-year-old singer stops by the gym for a workout. After sweating it out, he heads to the clinic for an IV therapy drip as he continues to get fit for his upcoming 'Changes' tour. It's been a rough week for Justin who was completely shell-shocked with ex-girlfriend Selena Gomez came forward with allegations of abuse. The singer is just trying to keep it together so he can begin the next chapter of his career.