Jennifer Aniston in Bathing Suit Says "Thank God for Girlfriends"

Jennifer Anison is paying homage to the women in her life in her swimsuit. The 54-year-old actress shows off her forever young figure in a bathing suit in one of her latest social media posts, a video compilation of moments with her BBFs. “Thank god for girlfriends,” she captioned the Instagram tribute. How does she stay so fit? Read on to see 7 ways Jennifer Aniston stays in shape and the photos that prove they work—and to get beach-ready yourself, don't miss these essential 30 Best-Ever Celebrity Bathing Suit Photos!

1. She Drinks Shakes

Jennifer loves drinking shakes. During a recent interview with Allure to blended up a mix of powders, nuts, ground-up things, bananas, “chocolate things,” and shavings. “Whoa, I hope you like sweet things,” she said to the journalist. “Cheers.”

2. She Embraces Aging

Aniston is embracing aging. “I feel the best in who I am today, better than I ever did in my 20s or 30s even, or my mid-40s. We needed to stop saying bad shit to ourselves,” she told Allure. “You’re going to be 65 one day and think, I looked fucking great at 53,” she then said to herself.

3. She Believes Resentment Is Toxic

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Aniston told Allure “It’s important,” to not hold a grudge. “It’s toxic to have that resentment, that anger. I learned that by watching my mom never let go of it. I remember saying, ‘Thank you for showing me what never to be.’ So that’s what I mean about taking the darker things that happen in our lives, the not-so-happy moments, and trying to find places to honor them because of what they have given to us.”

4. She Does ta Lot of Cardio

Jennifer sticks to a cardio routine: The 15-15-15 workout. “I had an injury last fall and I was only able to do Pilates, which I absolutely love. But I was missing that kind of sweat when you just go for it,” she recently told InStyle. “I'm going back to my 15-15-15, which is a 15-minute spin, elliptical, run. And then just old school: I can chase myself around a gym. I need some kind of movement, even if it's just 10 minutes a day on a trampoline.”

5. Her Diet Is Religiously Healthy

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Jennifer is famous for her healthy diet devotion. “I don't let eating habits get out of control where I need a reset button," she told Yahoo Food. "My general philosophy is to eat healthy. It's pretty clear: eat as much organic fruits and veggies as you can, keep sugar [intake] low, drink tons and tons of water, and get good sleep."

6. She Hydrates

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Aniston drinks a whopping 100 ounces of water per day. "But occasionally I just have to have a Diet Coke—there's nothing like it!" According to the U.S. National Academies of Sciences, Engineering, and Medicine men should drink about 15.5 cups (3.7 liters) of fluids a day and women about 11.5 cups (2.7 liters) of fluids.

7. She Spikes Her Coffee with Collagen

Aniston adds collagen peptides to her coffee. “I’ve always been an advocate for finding wellness from the inside out - and I’m so happy to share the importance of collagen,” she revealed. "Though we may not all be blessed with the genetics of Jennifer Aniston, we can still reap the potential benefits of collagen peptides, which she swears by. The star has said she puts a scoop in her smoothie each morning to keep her skin youthful and her body limber," says the Cleveland Clinic. "Taking collagen peptides — also known as hydrolyzed collagen or collagen hydrolysate — can help prevent unwelcome health woes by replenishing some of your body’s collagen supply."