Lorena Castell Shares Bathing Suit Photo as "The Pink Panther"

Spanish TV presenter Lorena Castell is living it up on vacation at the beach, having fun with her friends and family. Castell, 42, shared pictures of herself posing on a yacht with a group of besties, wearing a pink bikini and patterned sun hat. "The pink panther 💓," she captioned the post. "The prettiest and nicest," a fan commented. How does she stay so fit? Read on to see 5 ways Castell stays in shape and the photos that prove they work.

Castell follows a low-carb diet with plenty of green, leafy vegetables. "The diet that has worked the most for me and that has been the best for me is the ketogenic diet," she says. "It consists of reducing carbohydrates, you have to eat more protein and then be satisfied. What you eat the most are vegetables, especially vegetables from above the ground. Those from below the ground, no, because they have a lot of sugar, they have more starch."

Castell enjoys specific fruit on her low-carb diet—mainly strawberries, raspberries, blueberries, and blackberries. "One cup of strawberries (or about eight medium strawberries) has only 45 calories, 3 grams of dietary fiber (12 percent of your daily value) and more vitamin C than an orange," says Allyn Wergin, RDN. "Vitamin C is a known antioxidant that helps protect the body against oxidative stress. Strawberries are also naturally low in sugar and contain only 7 grams of natural sugar per 1-cup serving."

Castell enjoys plenty of cheese and eggs with her meals, and 85% cocoa chocolate. "Most dark chocolate is rich in plant chemicals called flavanols," says registered dietitian Cathy Deimeke. "Flavanols are antioxidants linked to a lower risk of heart disease. In theory, dark chocolate will contain higher flavanol content (greater health benefit). Milk chocolate contains much less, and white chocolate contains none. Dark chocolate is also a good source of soluble fiber, vitamins, and minerals (like iron, zinc, magnesium, etc.)."

Castell uses resistance bands for her workouts. "Research shows that strength gains from using elastic resistance bands are similar to training with dumbbells or weight machines, benefitting not only the average person but also athletes," says Lindsay Bottoms, PhD. "Resistance-band training can even increase the stabilizer muscles to a greater extent than weight training."

Castell refuses to obsess about her weight, focusing on being the best version of herself. "You don't have to be obsessed, you don't have to be thin as a stick, you have to be at your weight that you consider good," she says. "It's being objectively well, with a good ratio between muscle and fat. Give yourself a realistic goal and a long-term goal."