Jonah Hill's known just as much for his yo-yo-ing weight as his movie roles. We've seen him go from chubby goofball in Superbad to slimmer and super slim in in 21 Jump Street. Then it was up and down and up and down again as he gained and lost weight for roles in The Wolf of Wall Street and War Dogs. He debuted a once again slimmed-down physique this year, and here's exactly how he did it.

He called Channing Tatum.

After putting on a good amount of weight for his role in War Dogs, Hill called up his buddy and 22 Jump Street costar to get motivated. He revealed to Jimmy Fallon on The Tonight Show that he asked Tatum, "Hey, if I ate less and go to a trainer, will I get in better shape?" Tatum's answer was an obvious hell, yes.

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He removed one major thing from his diet.

At least he tried to. "I still drink beer — that's my Achilles' heel," he told the Kyle and Jackie O radio show recently. But Hill did acknowledge that he notices big changes when he stops drinking the stuff. "It's so annoying because if I don't drink beer, I get really thin, and then when I drink beer, I get a little bigger."

He ate a lot of Japanese food.

The funny guy introduced plenty of sushi into his diet. It's typically low in calories and rich in heart-healthy omega-3s and selenium, which boosts immunity and helps maintain a healthy metabolism. One of his favorite spots to visit while filming The Wolf of Wall Street in New York was Sushi of Gari.

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Jonah started running.

Physically rather than mentally, he joked on a radio show. Running was a good way for him to ease into exercising.

Jonah turned to a pro.

To get ahold of his food cravings and create a diet plan, Hill visited a nutritionist who suggested eating more fruits and veggies, lean protein, whole grains, and low-fat dairy products. The doctor also told Hill to write down everything he ate and send it in an email. It didn't go as planned: Hill made note of his meals (yogurt, salad, chicken), began typing "dr" for "doctor" into the recipient line, and hit send. Turns out, his email auto-filled "dr" to "Drake." To make matters even worse, Drake never even responded.

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He did 100 push-ups every day.

In an interview, Hill revealed a workout secret a pal had recommended: "A friend of mine was like, 'If you do 100 push-ups a day, you'll be in good shape.'" To be completely fair, a well-rounded workout requires more than a ton of push-ups, but it got Hill moving on the regular. "I worked my way up, and now I do that every day," he said.

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