Evelin Villegas is celebrating her birthday in her bathing suit. "In an island for my birthday 🥳 I am in the place I want to be in life , I work hard and I play harder . I'm very proud of myself and I cannot believe I was born in 1992 🤪 This trip has been awesome and the company even better 😉 @coreyrathgeber_90 😘 . Thank God for one more year of life and 8 year's celebration of Corey and I being boyfriend and girlfriend, I know it's cheesy but we still celebrate it," the 90 Day Fiancé star captioned the post. How does the star keep herself fit? Read on to see 5 of Evelin Villegas' top tips for staying 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!

Evelin stays fit, but not just with the help of the gym. The reality star promotes an active lifestyle, which can be evidenced by her Instagram feed. You can regularly find her surfing, hiking, hangliding, and walking on the beach.df44d9eab23ea271ddde7545ae2c09ec

Evelin is all about hydration. Not only does she drink tons of water, she keeps her thirst quenched and electrolytes restored with help of coconut water. Here she is drinking out of a coconut shell on the beach. 

Evelin ensures she is getting all the nutrients she needs with the help of supplements. "Getting back on track this new year with @flattummyco 💕 I love how my body feels after one of these, I'm already so excited for those final results," she wrote in an Instagram ad promoting Flat Tummy Co. a brand that makes supplements and shakes.

It takes a lot of ab work to get flat abs a la Evelin. "Just finished my first workout with @flattummyapp and I'm already in love with this app. It gives me personalized guided workouts that I can do right from home. I'm loving the 30 day challenges, to keep me motivated and on track," she captioned an Instagram post. "My goal was to get to 100 pounds and I did it now I want to control my weight and stay in shape , this app allows me to do workouts to reach my goals and includes amazing food recipes." In a different video she detailed one of her workouts: 15 jumping jacks, 16 step ups, 14 push ups, 20 second planks, and and repeat.

Evelin is all about body positivity. "A challenge worth doing. Go ahead and do it, tag me in your stories of you talking about what is your favorite part of your body. We all deserve to feel beautiful and sexy. Much love," she said in a since-deleted video, per Showbiz CheatSheet. "I want you to go to a mirror, look at yourself, and find out what is the favorite part of your body. What makes you feel sexy and makes you feel pretty. Mine, for example, are these dots on my chest," she says in it. "If we feel pretty outside we feel pretty inside, if we feel pretty inside, we feel pretty outside."