By Jonathan Borge
Apr 23, 2016 @ 10:45 am
John Lamparski/WireImage

Not sure whether or it’s OK to bite into that well-deserved Friday slice of pizza? Just do it! Celebrity fitness trainer and reality TV star Jillian Michaels revealed what is really takes to look like a bombshell at the pool or near the beach this summer and the results don’t exactly require the painstaking amount of discipline we expected.

Yes, it all comes down to a healthy balance between nutrition and exercise, but there’s one key Michaels, who admits to not always hitting her full 150 percent potential, makes sure to follow. “Well truthfully, I do try to stay in shape throughout the year. I fluctuate a little bit given my work schedule, to be honest,” she told InStyle Thursday night in L.A. at a photography exhibition. “In truth, I always tell people the same thing: It’s really simple and it should stay really simple.”

So what’s the ultimate bikini-ready secret? “Don’t overeat,” she said. “Use common sense with your food. I don’t mean gluten, I don’t mean carbs, I don’t mean protein. I mean chemicals. Don’t eat chemicals. And get to the gym if you can, four half-hours a week. When you go, keep your heart rate at 85 percent of your maximum heart rate. It’s 220 minus your age, times .85.”

Time to whip out that Fitbit, stat.

RELATED: Here's What Zac Efron Eats During the Week to Maintain His Killer Physique

—With reporting by Brandi Fowler