During filming for The Lucky One, Efron adopted an intense workout regime to pack on added muscle. "You get this strange sense of power as those weights increase," Efron -- who worked out five days a week for an hour each time -- told Men's Health of his fitness routine while cameras rolled.
Zac's Buff Body
During filming for The Lucky One, Efron adopted an intense workout regime to pack on added muscle. "You get this strange sense of power as those weights increase," Efron -- who worked out five days a week for an hour each time -- told Men's Health of his fitness routine while cameras rolled.