Halle Berry in Bathing Suit is "All Grown Up"

Halle Berry has been wowing fans for years with her unforgettable roles and stunning looks, and did so again yesterday in a swimsuit. "Nisi all grown up #BAPSvibes," she captioned it, in a throwback to her 1997 comedy, in which she played Denise “Nisi,” who wants to open a combo hair salon and restaurant. The 55-year-old is undeniably one of the most gorgeous women ever and never seems to age. The Oscar-winning actress looks incredible and seems to be in the best shape of her life. So how does she do it? Read on to see 5 ways Halle Berry 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 Loves Green Juice

The X-Men star posts about her diet and fitness regime regularly on Instagram and has mentioned in IG stories that she will skip breakfast, but will usually have a green juice. "I normally eat two meals a day," Berry told her Insta story viewers. "I normally skip breakfast and I sort of fast and I do my green drink or I do my bullet coffee," Dr. Steve Hruby, a Doctor of Chiropractic and founder at Kaizen Progressive Wellness explains, "There are many potential benefits of juicing, including weight loss. When you juice, you're taking in all the nutrients from the fruits and vegetables in a concentrated form. This means you're getting all of the antioxidants, phytonutrients, vitamins, and minerals without having to eat the whole fruit or vegetable.

Some other benefits of juicing include:

• Increased energy
• Better digestion
• Clearer skin
• Improved sleep quality

Juicing is a great way to get more nutrients into your diet, and it can be especially helpful if you're trying to lose weight or stay in shape. Just make sure you're using healthy ingredients and avoiding sugary juices or smoothies."

2. Stays Hydrated

Dia Dipasupil/Getty Images

In an interview with Hollywood Life, Berry's trainer Peter Lee Thomas said, "She starts her day with a big glass of water, about 8-12 oz [approx. 236 to 355 ml], usually with a little lemon squeezed into it for flavour. And then directly after that, she will take her amino acids." Brianna Joye, a fitness trainer and founder of BOLD by Brianna Joye explains, "Drinking water helps you live longer & helps your metabolism. It’s crucial for recovery as well. I always tell my clients to aim for at least 2 liters a day! I usually aim for a gallon!"

Lauren Steiner, RD, LDN, MS with LAUREN STEINER NUTRITION adds, "Our bodies are made up of at least 60% water. Water is essential for several metabolic processes in the body, and without it, our cells cannot function properly or optimally. All of the systems in the body are interconnected, so if we are dehydrated, we are going to feel it in more areas than one. For example, the digestive system cannot function properly without water, and overall metabolism cannot be running at its best without proper digestion. If our metabolism becomes sluggish, it is going to be more challenging to lose weight or stay in shape. We should be drinking 2-3 liters per day on average."

3. Doesn't Eat Sugar

Daniele Venturelli/WireImage

The mother of one has been avoiding sugar for years because she is diabetic. "When I was 19 or 20 years old, right before I was diagnosed with diabetes, I was a complete sugar addict," she told Women's Health. "I started the day with some sort of sugary cereal like Lucky Charms or Cocoa Puffs and I always, always had a candy bar or some sort of hard candy (Jolly Ranchers and Hot Tamales were my go-to's) on me. I was sugared-up all the time." After she learned about her health issue, she stopped eating sugar "cold turkey" and after several weeks of withdrawal symptoms like headaches and mood swings, she no longer craved sugar. Dr. Melina Jampolis MD, internist & physician nutrition specialist and podcast host adds, "Sugar is everywhere. You may not even realize that some of the foods you eat contain added sugar. Here are the top sources:

• 47% from beverages, not including regular milk and 100% juice
• 31% from packaged snacks, candy, and sweets
• 8% from breakfast cereals, breads, and granola bars
• 6% from mixed dishes like sweet and sour chicken or peanut butter and jelly
• 4% from dairy products, including flavored milk and sweetened fruit yogurt
• 2% from salad dressings, sauces, and condiments, including savory ones like ketchup and ranch dressing."

Dave Shelton, Founder & Trainer at My Fitness System adds "diet" sodas aren't great, either: "Artificial sugars are a prime suspect in weight gain and poor health, as they can activate the same pathways in the brain as regular sugar. In fact, they may even be more damaging, as they can trick the body into believing it's getting energy from food, when it's not. This can lead to cravings and overconsumption of other foods."

4. Boxing

Vivien Killilea/Getty Images

Halle loves to get in the ring! "Boxing is still considered one of the best full-body workouts," Berry wrote in an Instagram post in August 2018. "You'll sculpt every muscle and burn major calories and fat. It dramatically decreases stress levels, develops hand-eye coordination, and builds confidence and discipline. But most importantly... you'll never stop learning....I've been boxing for the past 10 years and regularly for the past three and I love that I always learn a new way to challenge myself and work new muscles." Antoine Hamelin, a kinesiologist, a trainer with 20+ years of experience and CEO of First Step Fitness Trainings says, "Boxing is one of the greatest forms of cardiovascular training that you can do to keep weight off. One of the main reasons for that is that it is anaerobic by nature. Thus, unlike jogging for example, it creates an oxygen debt (that is why you will be working hard at catching your breath in between bouts). So on top of burning a lot of calories because you move both the arms and the legs, your metabolism stays elevated for hours after the exercise is done.It strengthens the body because many ballistic actions are involved in boxing. When you throw a punch, you activate many hip, abdominal and upper body muscles all at once to create a powerful action. Moreover, the intensity at which you produce those movements is always maximal, thus eliciting a muscle growth response.Intense cardiovascular training creates a hormonal response by altering the brain's chemistry. After a boxing session, 'feel-good' hormones like serotonin and dopamine circulate in your body in greater amounts creating a sense of peace and calm that can last for hours."

5. She Changes Up Her Routine

Amy Sussman/Getty Images

The actress does everything from yoga to plyometric training and running. Hamelin states, "The body adapts to any physical stress it is presented with. If you lift weights at a certain intensity -- meaning the last few repetitions of a set are challenging -- the body will create new muscle tissue as an adaptation. When you do cardio training, the body adapts as well by increasing the amount of mitochondria -- the organ that extracts oxygen from the blood -- in the muscles. That is why your capacity to run or do any cardiovascular activity increases with time.If the stimulus presented to the body is insufficient, adaptations will not occur. If you stay on the same program for weeks on end, you might top off the capacity of the body to adapt. Hence, it is important to vary both the type of training that you do from time to time -- cardio and weights -- as well as the program itself. For weightlifting, changing every 4-6 weeks is a very good option and will ensure progression; and for cardiovascular training, changing every 2-3 weeks the type of training or the intensity can help you improve greatly over time."

Halle Berry doesn’t just star in her latest movie, Bruised, about an aging MMA fighter. (It’s in theaters now and on Netflix November 24th.) She directed it, too. The achievement landed her the cover of Women’s Health. “What an immense pleasure to speak with @womenshealthmag on everything Bruised -- and thank you to my beautiful friend @cliffwatts for an incredible shoot!!,” Berry wrote on Instagram. Says Women's Health: “When she couldn't find the right director to help bring her vision for the story to life, she took it on herself." Read on to see 7 ways Halle Berry 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 Says Age is Just a Number

"I'm at my best when I have to work hard and when I'm facing challenges," the Oscar winner told Women’s Health, calling the new role "totally empowering. To be the age I am and push my body to its limits reminded me that age is just a number. We can control how we define ourselves, and I’ve never been healthier and felt stronger. This movie helped me realize that."

2. She Worked Hard for Those Abs

With longtime trainer Peter Lee Thomas, Halle will do “sets of weighted lunges, stairs with weights, squats, and plyometrics (a blend of cardio and strength training), which includes jumps with weighted balls, sprawls, and Turkish get-ups. To target her core, Halle does situps and crunches while hanging upside down,” says Women’s Health. “Only something severe even puts a dent in my abs,” Halle told WH. “I’ve had two children, so the skin is just looser there. So, I have to fill that area with muscle.”

3. She Intermittent Fasts

Alberto E. Rodriguez/Getty Images

Intermittent fasting can reduce fat calls. According to one study: “Through an analysis into the underlying biology involved, the researchers found that such intermittent fasting tempers an immune reaction in fat cells. There are changes in certain gene pathways involved in the immune system and the body's reaction to inflammation.” "Intermittent fasting without a reduction in calorie intake can be a preventative and therapeutic approach against obesity and metabolic disorders," said study author Kyoung-Han Kim.

4. She’s Learned This as She’s Grown

Presley Ann/Getty Images for Netflix

“As I’ve grown, I’ve learned that what’s important in life is our attitude, sense of well-being, and sense of strength on top of being healthy and strong. It was never about me looking a certain way; it’s always been about achieving optimal health. I just wanted to strengthen myself from the inside out. That’s how we keep the impression of youth because we keep our bodies younger and feeling stronger, and we’re more active so we feel like we’re essentially aging backward. But we’re aging forwards and being mindful about how we do it,” she told Shondaland.

5. Motherhood Changed Her

Amy Sussman/Getty Images

“Then, from the moment I became a mother onward, I wanted to be strong and healthy for my kids. I wanted to be around for them for as long as possible. I wanted to be able to carry them out of a burning house if I needed to,” she told WH in a previous interview.

6. She Launched a Wellness App

Leon Bennett/Getty Images

“I started to think: What can I leave my children? And what is the greatest imprint I can leave on this earth when I leave? And I realized that it was to leave a brand that they could connect to that was also a part of who I was. I wanted to have a voice that mattered, that lived outside of my work as an actor. Our rē•spin community is rooted in helping people across the board to address the needs of people who are interested in health, wellness, and fitness and who are committed to living a mindful life and their best life,” she told Shondaland.

7. ”When You Know Better, You Do Better"

David Livingston/Getty Images for Fashion Media

“I want people to rethink everything about their health,” Berry told Oprah Daily. “Everybody is different—it shouldn't be about trying some fad diet that everyone is doing. There is so much new information and technology out there now, and when you know better, you do better.”