17 Shocking Male Celebrity Weight Transformations

From Zach Galifianakis to Rick Ross, several male celebrities have made major lifestyle changes to improve their health. Trading unhealthy foods and inactive lifestyles for strict meal plans and weekly exercise routines, here are 15 entertainers who made dramatic body transformations.

From Zach Galifianakis to Rick Ross, several male celebrities have made major changes to improve their health and bodies. By trading junk foods and inactive lifestyles for strict meal plans and weekly exercise routines, check out the guys who made dramatic body transformations.

For years, Maybach Music Group founder Rick Ross proudly flexed his man curves — usually while shirtless– in music videos, on stage and even during photo shoots.

Once known for his slim figure, Pete Wentz appears to have packed on some extra muscle over the past few months.

Rapper Paul Wall, who had a string of hits in the early 2000s, kept much of his body masked under tall T-shirts and baggy jeans.

But when The People’s Champ stepped back into the spotlight in 2010, he looked like a totally different man. Wall and his wife took on the challenge of losing weight together and the results were pretty amazing.

John Mayer is known for his yo-yoing weight.

But the leaner look he’s recently been sporting has received quite the rave reviews from his fans.

He’s typically shrouded in T-shirts and loose-fitting denim, leaving many unsure what type of body Drake was hiding underneath all those layers. 

Carson Daly was every teen's best friend as the host of the hit 90's MTV video countdown show, TRL. 

Music producer Timbaland totally changed the game when he packed on the muscle a few years ago. 

Fashion icon Marc Jacobs made the jump to seriously cut several years ago.

Jacobs told I-D that problems with stomach digestion and his intestine motivated him to get in better shape. He said he lost the weight by sticking to a strict eating and exercise plan.

The Today weatherman Al Roker is a standout example of adopting healthy lifestyle changes and sticking to them.

According to magazine reports, Entourage actor Jerry Ferrara dropped around 50 pounds back in 2011, completely changing his look. 

Ferrara told HuffPost Live that he made the decision to drop the weight due to his concerns about his health. 

The Game kicked off 2013 with plans to lose weight in time for Valentine's Day. And the rapper made quite the progress in just the first 60 days of his plan.

The Game has tracked much of his fitness journey on Instagram, adding an impressive amount of muscle since beginning his new workout regimen. 

Josh Peck shocked fans when he debuted his slimmer look several years ago.

Shia LaBeouf filled out his frame once he exited his role as the annoying younger brother of Christy Carlson Romano on Disney’s Even Stevens.

LeBeouf has put on muscle for several movie roles, maintaining his build with a set diet and daily workouts. When he was gaining weight for the film Lawless, LaBeouf told The Tonight Show that he’d wake up in the middle of the night to drink protein shakes.

In the early 2000s, Craig David was known for his smooth vocals and endless collection of beanies and track jackets. 

But these days, the singer is better known for his rippled physique. Speaking to Men’s Health UK, David said he is currently in the best shape of his life. 

But it was his weight loss at the Oct. 11 premiere of his movie Birdman that really grabbed peoples' attention. 

Blogger Perez Hilton was known for his fuller figure at the beginning of his career. 

But in 2012, Hilton his 70 pound weight loss. And he's been sporting a super-lean build every since. 

With his joyful personality and head full of curls, Seth Rogen has always been a Hollywood favorite.