"I was so happy about having a job and not having to worry about paying the food bill, I ate anything on set," says Foster, 24. "Fried chicken, mashed potatoes, you name it. I got sucked into craft services and, yes, it was just like college!"
The 6'3" actor, who plays Cappie on the hit show, quickly reached 200 lbs. Around the same time, he also found out he was allergic to gluten. "It runs in my family," says Foster, whose symptoms included a bloated stomach and extremely dry skin on his hands. "It just got worse and worse and I was like, 'This can't be normal!' "
After being diagnosed about three months ago, Foster cut out wheat and flour products from his diet. "I can't eat bread, anything fried or even drink a beer," he says.
New Diet, New BodyHis diet now consists of protein, vegetables and fruit. He also eliminated most milk products, including cheese. As for treats? "I don't really like sweets, so that's never been a problem," he says. "Instead I'll have Kettle potato chips, which are gluten-free."
Shortly after his diagnosis, Foster also began exercising more rigorously. "I was introduced to spinning," he says. "It was so intense! It's the hardest workout you've ever done and afterwards you feel amazing."
Now, he spins at least two times a week and mixes kickboxing with strength training three times a week. "The weight just started coming off," says Foster, who has dropped 15 lbs. with a goal to lose another 5 lbs. before Greek begins shooting again in early June.
By then, it might be time for a new wardrobe. "I'm afraid all the clothes [on Greek] might be too baggy," he says.
As for being tempted by craft services food again? "I know better this time around," he says. "Working out and eating better feels great, so I'm pretty sure I'll be fine!"