The Biggest Loser host and trainer Bob Harper has spoken out about his diet, saying he 'feels great' eating 'more plant-based'.
Harper, 52, who had a near-fatal heart attack almost a year ago, has revealed he's a 'big fan of eating more plant-based', adding that it's also a 'great weight-loss tool'.
The reality TV host used to eat a Paleo diet - and admitted the shift to a predominantly plant-based diet has been 'a real challenge'.
He told POPSUGAR: "It's been a real challenge for me, because when you find something that you thought was really working for you and you have to go back to the drawing board, it's a big adjustment."
Harper went on to say that although he was 'reluctant' to try out the new diet, the payoff has been fantastic.
The fitness expert also admitted: "I miss eating a good grass-fed burger like I used to, [but] I realize with the genetics that I have to be very careful."
He added: "I had to go back to the drawing board and figure out how this [new] diet plan's gonna work with me. My doctors want me to be more plant-based - even more than I am in my book!"
The personal trainer's new book, The Super Carb Diet: Shed Pounds, Build Strength, Eat Real Food, focuses on a carb-friendly, veggie-heavy, and aimed at weight loss and maintenance.
Harper also gives tips to those wanting to try out a plant-based diet.
"Don't rely on all that 'carbage'," he says. "You see so many vegetarians who say, 'Well, I'm not eating animal protein anymore so I'm healthy,' but I say, 'Look at the quality of the food that you're choosing!'
"There's so much crap out there. You can't just say, 'I'm a vegetarian so I'm gonna eat french fries every day!' That's not how it works.
"Be mindful," he says. "If you're going to choose this lifestyle, you have to be mindful and really aware of what you're doing. Do your homework; do your research so you're really feeling strong and feeling good - because all that carbage stuff is going to make you feel crappy."