No stranger to the physical transformations so often demanded of Hollywood stars, Kellan Lutz is working hard to make sure his overall health remains strong. 

The 28-year-old star has revealed that he's currently in the middle of a detox following the high-protein diet he maintained to add muscle for his titular role in "Hercules: The Legend Begins." 

"I wanted to put on weight," he recently told E!. "Renny [Harlin] the director, he just wanted me cut, so I had to get cut. If you've ever been on a movie set, there's food all the time. It's hard to stay healthy because I had milk chocolate bars three times a day, and I'd just eat the whole bar."

Seeking a return to something healthier, Lutz says he consulted nutritionists who initially recommended he adhere to a plant-based diet.

"It's really important to learn about your body and I've gotten some tests done just to learn about what I'm allergic to and they (medics) actually said that caffeine is not good for me and that I should be a vegan but I love meat," he told Access Hollywood. "So I've been trying this new paleo diet... and I feel healthy; I've cut out all of the sugars... I have candy drawers all over my place, so waking up and seeing my Starbursts and Gummi Bears... Knowing that it's not good for me though has been very easy (to give up)." 

The paleolithic diet, also nicknamed the "caveman" diet, consists mainly of fish, grass-fed pasture raised meats, eggs, vegetables, fruit, fungi, roots, and nuts and excludes modern processed foods such as refined sugars and processed oils. High levels of physical activity are also recommended - something that aligns well with Lutz's workout regimen.

"I like to wake up with the sun around 6:30," Lutz told Men's Fitness in 2011. "I'll just go for a run, drop and do some push-ups, run some more, do lunges, grab the rings, and do pull-ups."

Check out a trailer for "Hercules," arriving next summer in theaters, below. 

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