Cathy Hummels, the model, TV presenter and fitness maven, has never been afraid to show off her fit body. She just enjoyed a pool day, and made sure to get a stunning shot for Instagram. In it, Hummels posed in the water in a black bathing suit. Her flat stomach and toned legs were on display. "Absolutely stunning 😍❤️," commented beauty coach Boris Entrup. How does she stay so fit? Read on to see 5 ways Cathy Hummels 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!

Hummels spilled some of her favorite superfoods in an interview with FitForFun.com. She revealed that she loves to eat quinoa. "This is an ancient grain that is particularly easy to digest," she explains. "I appreciate quinoa for its alkaline effect – and because it's gluten-free." "Quinoa is a gluten-free whole grain that cooks in just 15 minutes. It's often called a superfood, because it's packed with B vitamins, antioxidants and heart-healthy fats," says the Mayo Clinic.

Another superfood that is present in Hummels' diet is edamame. "Low in calories and full of protein," she says to FitForFun.com. "Fills you up, but not fat, and tastes so nutty and delicious. Ideal for salads. This also saves on dressing." "One of the effects of eating edamame is that you'll get a good source of plant-based protein," registered dietitian Amy Goodson, MS, RD, CSSD, LD author of The Sports Nutrition Playbook, tells our sister site Eat This, Not That!. "which is especially great for all the vegetarians and vegans out there who can't get their protein from animal products."

Hummels tells FitForFun.com that she loves raspberries. "My favorite among the berries: all-rounder because they can be used in muesli, in salads and in smoothies," she explains. Hummels also says that she likes to buy organic raspberries in particular. "It is important that you buy organic fruits – because they are pesticide-free and taste much more intense."

Hummels is a big fan of doing yoga as a way to stay in shape. She posted this photo on Instagram of herself doing a handstand on the beach. Hummels captioned the photo, "The strength is to be found in serenity."

Hummels loves to go to the beach and to the pool, since she loves to swim. She has posted several photos and videos on Instagram of herself swimming. Hummels posted this stunning photo of herself in the pool. She captioned the post, "Focus on the good things. I focus on : L-O-V-E." "One of the greatest benefits of water exercise is its effect on flexibility. Water is a welcome environment for performing stretches that might otherwise be difficult on land. Because the effects of gravity are lessened, you can move your joints through a wider range of motion and achieve long-term flexibility," says ACE Fitness.