Izabel Goulart in Bathing Suit Says "Happy Birthday"

Model Izabel Goulart is celebrating her boyfriend, Kevin Trapp’s, birthday this week. The couple decided to spend a day at the beach, and played some squash. Goulart posted a set of photos of the couple on Instagram. She posed in a bright red bathing suit, looking gorgeous. She captioned the post, “Happy birthday to the best partner for life and most wonderful human being I have ever known.” How does she stay so fit? Read on to see 5 ways Izabel Goulart 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 Goes To The Beach

Goulart revealed some of her workout secrets to Vogue. She says that she loves to go to the beach. "I always had the most fun going to the beach on the weekends with my friends. In a way, we treated our beach style the way New Yorkers treat their street style, so I was always conscious of how I looked. I have the best memories from my childhood, and spending time in a natural environment made me be more aware of how important it is to have a healthy lifestyle."

2. She Loves Sports

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Goulart tells Vogue that she grew up playing sports. She says that this is what allowed her to live an active lifestyle. "Sports have always been a big part of my life. At school I played a lot of different sports and I was competing with other schools. I did everything: running, volleyball, basketball, soccer, Olympic-style gymnastics, and more! My history with sports gave me good concentration, focus, strength, and motivation to stay healthy."

3. She Mixes It Up

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Goulart tells Vogue that she does a lot of different exercises to stay in shape. “My favorite indoor workouts are Pilates, kickboxing, functional training, and a lot of different exercises at the gym with and without weights—including TRX."

4. She Works Out Her Core

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Goulart has an amazing set of abs. She revealed her go-to ab workouts to Vogue. "I have a series of exercises in which I do a lot of core. I enjoy an ab workout. I practice every day and do many different types. Now I have it all together, and I guarantee that between two and three months of practice, anyone can do it."

5. She Cooks

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Goulart tells ELLE that she likes to cook a lot of her meals. She says that she usually cooks healthy meals. "I travel a lot, but when I'm home, I cook every day," says Goulart. "In the mornings, I'll make juices with fruits, vegetables and protein." "Because cold-pressed juices are usually served fresh, they retain more of a fruit’s or vegetable’s vitamins and minerals. They don’t have the added sugars or artificial sweeteners that most bottled juices contain. Additionally, when a glass of juice is squeezed from several fruits or vegetables, it is likely to have a wider array of nutrients per ounce than a single piece of fruit," says Harvard Health.