The actor said initially he was working too hard to get the ripped werewolf body of his character, Jacob Black.
"I was in the gym five days a week, two hours a day. At one point, I was going seven days straight. I had put on a lot of weight, and then I started losing it drastically, so I was worried. It turned out I was overworking myself," he said. "My trainer told me that I couldn't break a sweat, because I was burning more calories than I was putting on."
The 17-year-old said one of his biggest challenges he faced while training was something most people work hard to curtail.
"The hardest thing for me was the eating. At one point I had to shove as much food in my body as possible to pack on calories. My trainer wanted me to do six meals a day and not go two hours without eating. If I would cheat on eating one day, I could tell, I'd drop a few pounds," he continued.
The hardest thing for me is to stop eating ;)
More after the jump
More pics of Tyler here. Cute pics of the Vamps from twilight here.
Taylor Lautner shirtless in a video below ;)