Kate Hudson in Bathing Suit Says "Happy International Women’s Day"

Kate Hudson is taking the polar plunge on International Women’s Day in her swimsuit. The actress shows off her phenomenal figure in a bathing suit with one of her pals, Angi Fletcher, in one of her latest social media posts, arising from a cold plunge. “Happy International Women’s Day to all the women in my life that inspire me daily!” she captioned the Instagram clip. How does the actress and mother-of-three maintain her fit physique? Read on for 8 ways Kate Hudson 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 Takes Supplements

Kate loves supplements so much that she started her own line, INBLOOM. “Really where it started for me was beauty. Magazines would always ask me, you know, 'What are your favorite beauty products? What do you do to keep your skin looking rested?'" she told InStyle. "My answer was always, ‘I know this is boring, but it's an inside out job.’"

2. She Exercises…A Lot

Kate works out “at least 30 minutes a day, maybe five times a week,” she told InStyle. “I make sure that I don't go a day without doing something for 30 minutes.” She likes to mix up her workouts so she keeps it exciting. "I do everything. I have to switch it up, I get so bored," she said. "I've been loving the Obé app, they have 20-minute workouts that are really hard and if you do them with the proper form they're really effective. I love my yoga apps, like Glo, and I use Body by Simone and Tracy Anderson's apps too — there's nothing better than her abs workout. I love my Peloton. I love Pilates — that's always been my number one."

3. She Prioritizes Wellness

Kate takes the wellness approach to diet and fitness. “I’ve always felt that wellness is about your quality of life,” Kate told Women's Health. “You need to know what makes you feel good. It’s about doing the things you love, eating the things you want to, exercising and not feeling like you need to [push yourself] for two hours in a hot room. You can just take a nice walk and still be healthy.”

4. She Does Yoga

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Kate is a devoted yogi. "It's about understanding your own individual likes, not fads," she told SELF. "Anything you do helps. You could sit there and not think of your mantra for your whole practice, but you're still benefiting.”

5. She Does Intermittent Fasting

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Kate has always been a big advocate of the intermittent fasting eating plan. “It’s not for everyone,” she told Women's Health. During fasting periods she will consume just celery juice, coffee, or tea, waiting until 11:00 or 11:30 a.m. to start solid food.

6. She Meditates

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Kate also gets her zen on. “When I [meditate], I can feel the difference right away. I feel myself becoming calmer, more centered and clearer-headed," Kate writes on her Fabletics website. "Meditation also made me realize that there are times when I thought I had a grasp on what was going on with myself internally, then I meditated and found that my body was telling me something different."

7. She Does Lots of Ab Work

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Kate is “an ab [workout] fanatic,” adding “and I hate [doing] them,” she told Well + Good. Stability ball crunches are one of the core exercises that helps keep her midsection tight. “I’ve had a C-section, and I think any woman who has had a C-section knows how hard it is to re-engage that lower part of your abs,” she said. “My C-section was 16 years ago, but if I go a few days without doing abs, my brain has a hard time re-engaging that area.”

8. She Has Workout Buddies

Kate is a big fan of the workout buddy system. “Find a friend that likes to get it and GET IT!” she captioned a recent workout snap with pal Sophie Lopez.