Aura Cristina Geithner is living it up in Mexico – in her swimsuit. The actress shows off her swerving curves in a bathing suit in one of her latest social media posts. "Kill 'em! 😍🌹 Cuteness overload … Dreamy Acapulco! 🏖🏝⛱☀️ Beautiful day for everyone!" she captions the Instagram video. How does she stay so fit? Read on to see 5 ways Aura Cristina Geithner 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!

Aura only diets when she needs to. "When I'm in projects or proposals for a magazine or novel, I automatically get in shape," she told TV Notas. "But when I'm not, I'm an ordinary woman who likes to eat and under everything that has to do with physical care, that's why I gain weight."

Aura loves to dance. "A little meringue on this wonderful morning! Who's down? Beautiful day to all!" she captioned this video. Dancing helps build strength and promotes flexibility, while also helping you lose weight and promote cardiovascular function. A 2016 study published in the American Journal of Preventive Medicine determined that people who engaged in moderate-intensity dancing were 46 percent less likely to develop heart disease or die from it than non-dancers. In comparison, moderate-intensity walkers were just 25 percent less likely to suffer heart health issues.

Aura also likes to box as a way of staying in shape. "This kind of boxing has many health benefits, because it constantly requires you to think, change your position, and change your posture," physical therapist Linda Arslanian, director of rehabilitation services at Harvard-affiliated Brigham and Women's hospital tells Harvard Health."You're swinging your arms, moving the muscles of your arms and shoulders, increasing your upper-body strength. And when you're in the boxer crouch with a wide stance, with your knees slightly bent, you're strengthening your core muscles, back, and legs."

Aura loves a good cheat meal. "Cakes and cookies," are her go-to cheat food, she told TV Notas. "I also love going to a restaurant and eating delicious; for example, a good rice with shrimp, bread with butter, desserts and ice cream."

When she wants to lose weight fast, Aura cuts a few things from her diet. "Yes and for me it is easy, I have become more vegan, when I want to lose weight, I avoid everything that is meat and carbohydrates; one has to accustom the organism to speed it up and eat every three or four hours. My body is so wise that, just as I gained 10 kilos in a month, I lose them in 20 days. I can't be a doll all the time, I get tired too," she told TV Notas.