When it comes to actresses in Hollywood who haven’t aged a day, Jennifer Aniston and her costar on The Morning Show, Reese Witherspoon, definitely top the (fit) list. As it happens, though, the talented A-listers aren’t just relying on genetics — both Jen, 50, and Reese, 43, work really hard to maintain their health. 

 “It’s no secret Jen’s obsessed with looking younger and feeling her best,” an insider explained exclusively to Life & Style. “She goes to great lengths to turn back time, and it shows. When you see her in person, she glows.”

Jennifer Aniston and Reese Witherspoon's Diet and Exercise Regime

“She eats only fresh and organic foods — salads, nuts, avocados, grilled fish with lemon … that’s basically it,” the source continued. As for Jen’s workout, well, it’s just as disciplined. “We box, we jump rope, we do strength training, we do a lot of work with resistance bands,” Leyon Azubuike, Jen’s trainer and co-owner of Gloveworx, told Women’s Health. “Every core exercise I throw at her, she dominates it. She can hold a two or three-minute plank rather easily.”

When it comes to Reese, she’s just as committed to fitness as Jen. “Reese’s willpower is pretty amazing,” a second insider told Life & Style. “She’ll have chicken, salad, maybe grilled fish.” Just like us ~average~ humans, however, the Legally Blonde alum knows what it’s like to deal with temptation, especially when she’s spending time with her kiddos. “They are constantly tempting her with snacks like ice cream and fresh-baked cookies at home,” the source explained.

Jennifer Aniston and Reese Witherspoon's Diet and Exercise Regime
Evan Agostini/Invision/AP/Shutterstock

“But for the most part, Reese stays strong. She’s got Jen in her corner when she needs it. They’re good influences on one another. It’s like having a second trainer, without ever having to get reprimanded!” the insider continued. “They keep each other on their toes about their shared fasting schedules, and immediately fess up when they cheat. Jen’s great at wellbeing advice.”

Clearly, these two powerful women have each other’s backs on-and off-screen!

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