Acting is a fine art that requires an innate and indescribable sensibility, which must be why Hollywood cares so much about looks. Whether it was to match the physical norms of Hollywood or for the sake of method acting, these eight actors hit the gym harder than you ever will—just to prepare for beefy, lucrative roles onscreen.
1. Jason Segel
Towards the end of the long-running How I Met Your Mother, there seemed to be a general change in audience attitude towards Jason Segel; as in, people started to realize how attractive he was. This could have been aided by Segel's muscular development, which was spurred by his 2014 film Sex Tape.
2. Chris Pratt
The man once known for playing a lovable, fluffy doofus on Parks & Rec became a lovable, chiseled doofus in preparation for his role in 2014's Guardians of the Galaxy.
3. Paul Rudd
4. John Krasinski
Krasinski has always been cute, but never in that way that says, "I have much manly blood pumping through my biceps." That changed when Krasinksi found himself starring in the 2016 Benghazi film 13 hours.
5. Jonah Hill
The rotund comedic actor shed some of the weight he carried around on films like Superbad in order to play a cop alongside former stripper Channing Tatum in 2012's 21 Jump Street. Hill dropped the weight again for the 2014 sequel.
6. Bradley Cooper
In 2001's Wet Hot American Summer, Cooper was a scrawny thing, at least compared to the Hollywood man he'd become by the end of the decade. For his role in 2010's forgettable A-Team, Cooper really brought out his abs. They haven't made as much of an appearance lately, but they're still there somewhere.
7. Tobey Maguire
For the first series of Spider-Man movies this century, Tobey Maguire packed on a more generically heroic bod for his three films (in 2002, 2004, 2007). There was much more to see on this body compared to the waif-ish look it took on in 2003's Seabiscuit.
8. Joseph Gordon-Levitt
To accurately portray a slimey, porn-addicted gym rat, JGL hit the weights for his 2013 film Don Jon. His shapely form was a far cry from other movies his lithe hipster frame had appeared in, like 2010's Hesher.