Sarah Michelle Gellar in Bathing Suit Celebrates Pal’s Birthday

Sarah Michelle Gellar is celebrating her friend’s birthday in her bathing suit! The former Buffy the Vampire Slayer star posted a photo tribute to her friend, trainer Mary Miller, in honor of her special day. One of them featured the two of them lounging on the beach in their swimsuits. “Love our adventures,” she wrote across it. How does the 44-year-old keep herself fit? Read on to see 5 ways Sarah Michelle Gellar 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 Green Juice

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Sarah recently dished to The/Thirty that she starts her day off with a coffee and some green juice. “My favorite thing is to have a green juice,” she said. “I go every weekend to the farmers market and I get fresh kale, spinach, celery, and lettuces and I blend it all together. That's my favorite thing before I work out.”

2. She Uses a Power Plate

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She also revealed her workout of choice. “I love PlateFit and the feeling of being on a Power Plate,” she said. “I love how quickly I can work out and get such a great exercise, I love Pilates because it centers me and it also strengthens my body, but I also love being outside, so swimming, hiking, anything like that is great as well.”

3. She Prioritizes Sleep

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Her number one “beauty/self-care must-have” isn’t an actual product. “It's probably sleep because I need it and I'm very cranky without it,” she revealed. "Set aside no more than eight hours for sleep. The recommended amount of sleep for a healthy adult is at least seven hours. Most people don't need more than eight hours in bed to achieve this goal," says the Mayo Clinic. "Go to bed and get up at the same time every day. Try to limit the difference in your sleep schedule on weeknights and weekends to no more than one hour. Being consistent reinforces your body's sleep-wake cycle."

4. She Doesn’t Try to Lose Weight

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“I don't believe in trying to trick your body into things,” she once told Health. “I eat healthy, I exercise, I love food—but I don't like junk food. I mean, were women. We go up by five pounds, we lose it, depending on the water, the moon, your cycle, whatever. So I just try to maintain.”

5. She Is a Fan of Cool Sculpting

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Sarah revealed to The Guardian that after welcoming her second child, she realized that diet and exercise weren’t going to dissolve her excess fat. While she wasn’t interested in going under the knife, she tried CoolSculpting and really liked it. “It was the easiest 30 minutes of my life,” she explained. “I just got to lie on a comfy table and read my book. The treatment didn’t hurt, it just felt cold for a few seconds and then I didn’t feel anything. It was very peaceful. I was just happy to have a few minutes to myself, and then I got to leave feeling better about myself – a win-win,” she continued. “I don’t weigh myself, I don’t measure myself but I could tell within a week how my clothing was feeling and fitting, how my jeans were buttoning back up. I was like, ‘I’m gonna go to the gym and work even harder now.’ It gave me my confidence back in such an easy and noninvasive way.”