Jonah Hill Dropped 30 Pounds For '21 Jump Street' Movie
A source told US Weekly, "[he] went on a diet for the movie, but gained weight at first!"
"Finally, he got a nutritionist and a trainer. Now he looks better and feels better."
Hill's partner in comedy Seth Rogen, on the other hand, is fighting the battle of the bulge now that he's off his Green Hornet workout regimen. He told Us Weekly, "I'm slowly outgrowing all the clothes I bought last year. It's a sad thing. I gave away all my fat clothes, thinking 'I won't need these anymore,' but I do!"