Nick Jonas Is Crazy Ripped on 'Men's Fitness' Cover, Shares His Strenuous Diet to Keep Diabetes in Check

The 24-year-old star has grown up before his fans' very eyes, and in the December issue of Men's Fitness, he reveals how he went from a "teen idol" to getting "leading man ripped."

On the cover of the magazine, Jonas flashes his impressive six-pack abs while giving a sultry stare. The image is reminiscent of the crotch-grabbing photo he posed for in Flare magazine back in 2014.
"The way I work out is really placing trust in the people around me," Jonas says in a behind-the-scenes look at his Men's Fitness photo shoot. "I've got a couple good trainers that keep all of my workouts in order."
The "Close" singer says he tries to be healthy because he loves "being fit," but he's also a Type 1 diabetic. Jonas admits in his interview with Men's Fitness's Mickey Rapkin that at age 13, he had "wild mood swings," because he wasn't managing his health condition properly. He now wears a Dexcom Continuous Glucose Monitor, which monitors his blood sugar.
"When I’m on the road, I always make healthy choices," he notes. "I don’t have a meal plan delivered to me, but I know what not to eat. I’m always cautious about the food I put in my body."
Being a Type-1 diabetic can be risky for Jonas when he's doing hardcore strength training to prepare for his role as a boxer in Direct TV's Kingdom. "We always keep glucose in the gym,” Gregg Miele, the owner of a private gym in Los Angeles, explains. “We’re always prepared for that. And as for diet, we got his blood work done and put him on a specific blood-type diet to make sure he wasn’t eating any inflammatory foods that would hinder his goals or set us back.”
"You just feel better when you put nutrition into your daily life," Jonas touts in the behind-the-scenes footage from his photo shoot. "It's a whole process."
Jonas admitted to ET that there was a time in his life where he thought his diabetes could kill him. "When I was first diagnosed, I didn't really know a lot about the disease, so I was actually thinking I was going to die," he disclosed, adding that he has learned how to "deal with it."