10 Hottest Celebrity Beach Bods and How They Got Them

4) Justin Bieber (4 of 10)

4) Justin Bieber (4 of 10)

This pop start packed on some serious muscle as he entered manhood. How’d he do it? He lifts 5 times a week, 45 per session, with a 3 day body part split. 1 for back and triceps, 1 for chest and biceps, and 1 for legs and shoulders. With a protein packed, low carb diet, Bieber looks great in his surf pants!