Kasia Warnke in Bathing Suit Shares a Special Selfie

Polish star Kasia Warnke is making the most of the spring sunshine, and taking selfies to document herself enjoying the beautiful weather. Warnke, 45, shared a picture of herself posing on a lounger in a black swimsuit, soaking up the sun. How does she stay so fit? Read on to see 5 ways Warnke 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!

1. She Avoids Sugar

Warnke says she goes out of her way to omit sugar from her diet. "I'm picky about food,” she says. “Above all, I avoid sugar. It does us the most harm! It's more addictive than cocaine." "The American Heart Association recommends limiting added sugars to no more than 6 percent of calories each day. For most American women, that’s no more than 100 calories per day, or about 6 teaspoons of sugar. For men, it’s 150 calories per day, or about 9 teaspoons. The AHA recommendations focus on all added sugars, without singling out any particular types such as high-fructose corn syrup," says the AHA.

2. Dietary Ups and Downs

Warnke admits there are times when her diet isn’t the healthiest—but she always turns it around. “There is a period when I take less care of myself, i.e. eat whatever, or even indulge myself, we go out with my fiancé for pizza, ice cream, I eat chocolate every day,” she says. “Then there comes a moment when I say to myself "oh no, it's over, tomorrow I start a diet."

3. Yoga Sessions

Warnke enjoys regular yoga sessions. Yoga is shown to be beneficial for both mental and physical health. “You may feel increased mental and physical energy, a boost in alertness and enthusiasm, and fewer negative feelings after getting into a routine of practicing yoga,” says Johns Hopkins Medicine.

4. Potato Dishes

Warnke is a fan of potatoes, which are still one of the most important crops in Poland. “One medium baked potato with the skin provides an excellent source of potassium and vitamins C and B6,” says the Mayo Clinic. “And is a good source of manganese, magnesium, phosphorus, niacin, folate and fiber.”

5. Lots of Vegetables

Kasia Warnke/Instagram

Warnke has learned to stick to intuitive eating instead of yo-yo diets. “Recently, there are less and less diets, and more and more conscious eating,” she says. “When I feel worse, I eat a lot of vegetables, drink fruit juices, water and, above all, I am physically active - it always makes me feel good. I think I've come to a point where it's cool and I'm not going crazy.”