The star of ''It's Always Sunny in Philadelphia'' gained more than 50 pounds for season 7, just because he thought it'd be funny. Below, the 5'9'' actor shares his tips for going from 162 to 215 pounds in under six months

By Melissa Maerz
September 16, 2011 at 04:00 AM EDT

Go it alone
In the writers’ room, I said, ”I think it would be interesting if we all [got fat].” Nobody wanted to do it. Glenn [Howerton] was like, ”F— that!” Kaitlin [Olson] was like, ”I just put on 40 pounds when I had a baby. I’m not doing that again.” So I said, ”What if I did it myself?” And they supported that.

Consult a professional
My friend [the Phillies’ Chase Utley] knew a sports nutritionist who specializes in getting offensive linemen fat. I wound up consuming five meals a day, 1,000 calories per sitting. You can do it the healthy way: four chicken breasts, four cups of rice, four cups of vegetables. Or you can eat a Big Mac. At a certain point, you just eat the Big Mac. With fries.

Lift weights
I was gaining weight, but just in my stomach. I wanted to accumulate fat in other areas. So the trainer suggested, ”Why don’t we do power lifting? It will create a big, fat, sleek look, like an albino seal.”

Never, ever walk anywhere
Any opportunity to take the elevator, I took. Any opportunity to drive, I drove. I thought about [buying a Segway], but production wouldn’t pay for it.

Binge late at night
Cottage cheese is great to eat before you go to bed because it metabolizes slowly. I was always gaining weight as I slept.

When in doubt, have a pastry
By the middle of production, I was eating six doughnuts a day. And I felt great.

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