40 Jennifer Aniston-Approved Diet And Fitness Habits You Should Try

To challenge her, Jennifer’s trainer Leyon Azubuike told Women’s Health that he has Jen do plank flow, where she starts in a standard plank, then moves to a side plank, then moves to plank with shoulder taps, and so forth.

Jennifer loves doing V-ups and using an ab wheel, Azubuike told Women’s Health. "We’ll use a sit-up to shock the body occasionally, but it’s not a major part of our core regimen,” he said.

Jen doesn’t pop in and out of the gym—she spends up to an hour and a half working out during each exercise session, Azubuike told Women’s Health.

Everybody has someplace they need to be, and Jennifer is no exception. Azubuike told Women’s Health that he uses a training technique called "periodization" with Jen, which adjusts things based on her schedule. "Depending on where we are in that cycle dictates the duration and intensity of Jen’s workout," he says.

"If I know Jen isn’t filming anything, it’s a different phase than if I know she has something coming up tomorrow. If she’s going to be walking up to receive an award, I’m not going to destroy her legs in the gym the day before."

"I do intermittent fasting, so no food in the morning," Jennifer told UK outlet Radio Times. "I noticed a big difference in going without solid food for 16 hours."

Sometimes Jen will work out in the middle of the night when she’s shooting. "She has to respond when I say go," Azubuike told Women’s Health. "If she has a shoot at 3 a.m. and we need to work out before that, let’s go...we respect each other in that regard, so it’s a constant back and forth with mutual respect and understanding."

Azubuike made it clear to Women’s Health that he doesn’t go easy on his famous client. “She definitely should be commended, because when I get into go-mode, I’m in go-mode,” he said.

Azubuike told Women's Health that he’s big on his clients (including Jennifer) eating nutrient-rich foods, like mix of healthy carbs, protein, leafy greens, and bright, colorful veggies.

You won’t find Jen up at the crack of dawn. She told Radio Times that she usually wakes up at 9 a.m.

They factor big-time into Jen’s workouts. "We box, we jump rope, we do strength training, we do a lot of work with resistance bands—we’re big on resistance bands," Azubuike told Women’s Health.

Azubuike told Women’s Health that he’s constantly rotating Jen’s workouts. “It’s always hard, she’s consistently being challenged—I’m a big fan of switching things up, so the body reacts in a positive way and changes,” he said.

"It’s the longest workout I’ve actually stayed with consistently other than yoga," Jen told InStyle. “There’s something about the mental aspect of boxing—the drills, your brain has to work, you’re not just sitting on a bike. It’s amazing.”

Making exercise a regular part of your day is clutch. Jennifer told Radio Times that she tries to do five workouts a week.

Jennifer didn’t love using a jump rope when Azubuike first tried her out on it because she thought it was challenging, her trainer told Women’s Health. But she kept at it. "I just made her keep on doing it, and now she’s great at it,” he said.

When Jen wakes up, she takes a mindful approach to her day. She told Radio Times that she has a celery juice and meditates before jumping into a workout.