Julia Wieniawa in Bathing Suit is "Snorkeling"

Polish star Julia Wieniawa is soaking up the winter sun in the Maldives. Wieniawa shared pictures and videos of her vacation, including ones of her snorkeling in a white bathing suit. "He is carnivorous, he will not eat any bread rolls," she joked about a baby shark swimming nearby. How does she stay so fit? Read on to see 5 ways Wieniawa 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!

Wieniawa practices yoga. "Yoga is a mind-body practice that combines physical poses, controlled breathing, and meditation or relaxation," says Adam I. Perlman, MD, MPH. "Yoga may reduce stress and anxiety, lower blood pressure, and lower your heart rate. There are many styles, forms and intensities of yoga. Hatha is one of the most common styles of yoga, and beginners may like its slower pace and easier movements. Prenatal yoga has been reported to help women prepare for labor and might even promote the baby's health. For animal lovers, there are even goat yoga classes."

Wieniawa loves running, which experts say is not only good for overall health but specifically back health. "We all know running has many benefits — it decreases stress, it increases cardiac health, it decreases weight, it helps your mind and mood. So those things are going to be very helpful," says interventional spine specialist Santhosh Thomas, DO, MBA. "That will allow you to tolerate your running injuries or back issues, if you get any."

Wieniawa uses resistance bands as part of her workout routine. "Bands naturally prevent you from cheating on the exercise, which is common when using free weights, especially among beginners," says Hayden Steele, NSCA-C.P.T., C.S.C.S. "Cheating involves the use of momentum to get the weight moving. Once that momentum has been built up, the muscle fibers no longer need to be maximally activated to continue moving the weight through the rest of the range of motion. In other words, momentum is doing most of the work, not the muscles."

Wieniawa uses battle ropes at the gym. "Most people think of the rope as an aerobic tool for the upper body," says Aaron Guyett, Master Battle Rope Trainer at Onnit, founder of Innovative Results, and U.S. Marine Corps Staff Sergeant. "You can train power, you can train strength, you can build lean body mass, and you can build aerobic capacity with the rope. You just need to understand how to vary your position, the rope, and all the different variables to generate your maximum expenditure of force."

Wieniawa loves to play tennis. "In addition to its physical benefits, tennis has many other advantages," says Daniel Amen, MD. "Though tennis can be a physically demanding sport, it's considered a non-impact sport. Tennis can be a great way to meet new people or spend more time with friends or family. It can be an enjoyable hobby that helps relieve stress. It's also a versatile sport suitable for all ages and skill levels."