Nina Dobrev, star of the Netflix hit Love Hard, was with boyfriend Shaun White at the Olympic games, cheering on the legend—but on social media, she was underwater, swimming with sharks. Dobrev was just one of many celebs who shared photos of themselves from tropical locales—in her case, on a tour with One Ocean Diving, in a throwback photo. We also spotted Ashanti in paradise, Dua Lipa and Chantel Jeffries in Miami, and many more. How do they all stay so fit while keeping so busy? Read on to see all the ways these celebrities stay 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!

When it comes to her diet, Dobrev says that she has changed her outlook on eating in recent years. "I used to eat three full meals and then I would not be able to move after each meal," she told Shape. "I would be so full and tired. Now, I eat all the time but portion control is what's important for me—I'm eating more in total but not more at a time." "A portion is the amount of food you put on your plate, while a serving is an exact amount of food. To get a better handle on what you're eating, you could carry around measuring cups. Or you could use everyday objects as reminders of appropriate serving sizes, which is what the Mayo Clinic Diet recommends," says the Mayo Clinic. "Many foods match up to everyday objects. For example, a medium pepper is about the size of a baseball and equals one vegetable serving. While not all foods match visual cues, this method can help you become better at gauging serving sizes and practicing portion control."

Actress Ananya Panday wore a tight yellow dress to advertise her latest film, Gehraiyaan, on Amazon Prime video on Instagram—and also shared a trailer from the movie. In addition to being an actress, Panday has also launched her own fitness program. She posted this Instagram video of herself doing some of her favorite exercises, and wrote in the caption, "I have SO many workouts for exercising at home with no equipment or at the gym, and they are going to make working out together so much fun!"

Luisa Collins enjoyed a drink in a jacuzzi this week, and she broke out her leopard print swimsuit to do so. When it comes to losing weight, Collins told the Daily Star that she likes to take supplements to prevent her from snacking too much. "When I take a Forza Raspberry Ketone in the morning and afternoon, my snacking habits are being curbed. They are like willpower in pill form. I feel more energized and taking the capsules has not really affected my lifestyle at all."

df44d9eab23ea271ddde7545ae2c09ec

Singer Ashanti wore a floral bikini and posed poolside on Instagram this week. In 2019, while promoting her film Stuck, she revealed to People that she made a lot of changes to her diet. "I cut out a lot of meat," she said. "I think again, self-health and self-awareness are so important. All of that stuff is so important to maintaining your body, knowing what's in your food, the GMO's and the chemicals, and I'm super aware of this stuff."

Brooke Burke advertised her workout program on Instagram this week, and she posted several stunning photos, showing off her toned body. The program Burke is advertising is designed to target your entire body, specifically your abs, legs, and butt. Burke posted a reel of herself doing her workout with some of her friends, captioning it, "Move, sweat, change." 

Singer Dua Lipa took a trip to Miami this week with her friends, model Sarah Lysander, and talent manager Bashir Arab-Sanchez. She posted several stunning poolside photos on her Instagram story. Lipa is also kicking off her "Future Nostalgia" tour, but she says that she still makes time to workout while she's on the road and traveling. "When I have a tiny bit more time on my side I love mixing up lots of different training, finding different workouts in whatever city I'm in, whether it's yoga, Pilates, boxing or spinning," she told The Urban List. "Whatever it is, I try to change it up every day to keep things interesting. When you're on a tour bus, every day and every place is different, so you never know what you're going to find. That's always one way to keep it interesting."

Model and DJ Chantel Jeffries posted this bikini photo of herself and her friend, Cindy Kimberly, as they lounged on a pool chair. In a video for Pretty Little Thing, Jeffries revealed that she switches up her workouts to keep herself interested. "I like to hike, I like to skate, swimming, so that's something to keep me motivated," she said. 

Fitness influencer Sommer Ray posted a gorgeous photo on Instagram of herself in a red bikini. Ray tells Life&Style magazine that she believes a healthy diet is the most important part of losing weight and staying in shape. "Diet is key. Diet plays a huge role in fitness. A lot of people go to the gym, work out really hard, then don't follow up with a good lifestyle. You can't expect a flower to grow without any water. Work out, but also take care of yourself." Ray even has her own app where people can put in what they eat each day, and it will calculate the food's nutritional value. 

After spending time in the Celebrity Big Brother house, Mellencamp revealed on Instagram that she had gained some weight and had slipped up on her diet. However, now that she's home, Mellencamp says that she is making a healthy diet and lifestyle a main priority, but is not doing so to lose the weight she gained. "IT'S NOT ABOUT A NUMBER ON THE SCALE BUT HOW I FEEL WHEN I AM EATING CLEAN AND TAKING CARE OF MY BODY AND MIND – MY ANXIETY DECREASES," she wrote. "TODAY I AM POSTING TO HOLD MYSELF ACCOUNTABLE TO MAKING MY OVERALL HEALTH A PRIORITY AGAIN. *even those of us who are "fitness influencers" go through different stages in our journeys."

Despite being a swimsuit model, Ambrosio tells Elle that she isn't afraid to indulge once in a while. She says that she prioritizes a balanced diet rather than a restrictive one. "Obviously I try not to splurge on pasta, but if I'm back in Brazil where everything is pasta- or bread-based—and so yummy—I'll eat whatever I want, then go back to lots of salads and chicken or fish with veg as soon as I'm back in L.A."

Tennis star Eugenie Bouchard enjoyed a trip to Miami this week, and one of the things she did while she was there was spend time on a boat. The main way Bouchard stays in shape is by playing tennis, however, she does do other exercises to stay healthy. Bouchard suffered a shoulder injury, and is doing exercises to help rehab it. She posted this reel on Instagram of herself doing a hydrotherapy session, and also posted this reel of herself doing arm workouts.