Gabrielle Epstein in Bathing Suit is "Off Road"

Australian model Gabrielle Epstein is an all-rounder: she has a degree in biomedical science (her goal is to one day become a doctor)—but she also models, and her social media followers approve. Epstein posted a photo of herself posing in the back of a truck wearing a green string bikini and white crop top, with the caption "Off road 🛻." How does she stay so fit? Read on to see 5 ways Epstein 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!

Epstein was a competitive swimmer until injury at 17 put paid to that dream, but still loves the water. "I started competitive swimming at a very young age and was state and national champion during my teen years and it was always my dream to compete at the Olympics," she says. "Unfortunately I tore my rotator cuff at 17 which put an end to that dream. After receiving an academic scholarship to study Biomedical Science straight out of high school I began modeling as a way to earn extra money (as I was currently working as a cashier supermarket at 17 and the only reason I started modeling is that I found out I could make much more money that way!)."

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Epstein loves scuba diving, and says one of the best birthday gifts she ever received was a scuba diving trip to the Whitsunday Islands, Australia. Studies show scuba diving offers many mental as well as physical health benefits.

Epstein grew up on Australia's Gold Coast and is happiest at the beach. "I live close to the beach and love running along the broad walk or the sand early every morning," she says. "I always have an amazing group of friends who I love spending time with whenever I have the chance."

Epstein stays active as part of her overall lifestyle. "I've always been heavily involved in sports all through school and represented Queensland and Australia at a Junior level in swimming," she says. "These days I run, do Pilates and hit the gym regularly. I find preparing healthy snacks and eating a balanced (rather than restrictive) diet is easiest to maintain with a busy lifestyle."

Epstein has a very down-to-earth attitude to what counts in life. "My definition of happiness is living a meaningful life in both my work and personal life," she says. "Being proud of the work I do, being able to live comfortably, yet still have enough free-time to enjoy the wonders of the world with my family, friends and pets that I love most."