Stepping onto the red carpet for the New York City premiere of The Morning Show in October 2019, Jennifer Aniston stunned in a floor-length black gown. Aside from a handful of guest-starring spots, her role as veteran news host Alex Levy is Aniston’s first time back on television since her 10-season, Emmy Award-winning run as Rachel Green on Friends – and it’s clear that even at 50, she is ready for her close-up. Posing alongside costar Reese Witherspoon, Aniston looked taut, toned, and fabulous — and it’s all thanks to her diet and fitness regimen.

Jennifer Aniston Reese Witherspoon
Reese Witherspoon (R) and Jennifer Aniston (L) arrive for Apples The Morning Show global premiere at Lincoln Center- David Geffen Hall on October 28, 2019 in New York.

“I always try to sleep for at least eight hours a night and, of course, water, water, water,” Aniston has said. “I drink 100 ounces [of water] a day.” For breakfast, she sticks to the basics. “I have warm lemon water, and then I have a shake or avocado and eggs,” she says. “Sometimes, I’ll have puffed millet cereal with a banana, or I’ll do oatmeal with an egg white whipped in at the end” — a trick she learned from ex-husband Justin Theroux to sneak in a little extra protein.

“Right before it’s finished cooking,” she suggests, “you just whip in an egg white, and it kind of gives it this fluffy texture that’s delicious.” On her food plan, which is mostly gluten-free, low-sugar, low-carb and high-protein, Aniston can eat unlimited meat, eggs, cheese, fish and shellfish. Lunch and dinner are usually a healthy protein with salad or a serving of veggies. As for snacks, “I love white peaches, when they’re in season, with a piece of string cheese,” she says. “And my not-so-healthy snack is chips and guacamole with a margarita. I’m so predictable, aren’t I?”

Working out plays a major role in maintaining her youthful physique. A longtime yoga and spinning devotee, Aniston switched things up with interval training — specifically Rise Nation, which combines cardio and climbing exercises. Then there are her intense sessions with trainer Leyon Azubuike.

Jennifer Aniston 2020 SAG Awards
Jennifer Aniston attends 26th Annual Screen Actors Guild Awards at The Shrine Auditorium on January 19, 2020 in Los Angeles, California.

“We box, we jump rope, we do strength training, we do a lot of work with resistance bands,” he’s said. “We rotate these things, so it’s always hard and she’s consistently being challenged.” Despite her committed routine, Aniston also knows the importance of taking days off. “It’s important to rest the body,” she’s explained. “I can go a whole week saying, ‘I’m not going to work out.’ Your body will tell you what it needs.” While all her hard work has certainly paid off, Aniston has noted that self-love is what really matters most: “Celebrating and being comfortable in [our bodies] — no matter what age you are — is important.”