Sophia Bush in Bikini Vacations in Mexico with Girlfriend Ashlyn Harris 

Sophia Bush is heating up Mexico in her bikini. In a new social media, the Chicago P.D. star shows off her amazing body while vacationing with girlfriend Ashlyn Harris and friends. “🍋‍🟩+🧂+☀️+🌊 ,” she captioned the series of Instagram snaps. “Oh so y’all cute cute 😍😍😍,” one of her followers commented. “all the happiness to the world to you and Ash! you complete each other in an incredible way!💘,” another added. How does the actress stay fit at 42? Here is everything we know about her diet and fitness habits.

Sophia suffered from asthma for many years. However, working with Dr. Will Cole, a functional medicine expert and the author of The Inflammation Spectrum, was a game-changer. He put her on an anti-inflammatory diet. “I hate diet culture so much. But working with [Cole] made me realize that continuing to eat the things that are bad for your health isn’t freedom. It’s kind of like being in an abusive relationship,” she told Women’s Health.

Sophia told Women’s Health that she starts the day with three beverages: a big glass of water, a cup of bone broth, and coffee.”Bone broth helps replenish from the night’s dehydration,” she said. “I keep a brown paper bag in my freezer and if I make an animal product, I put the bones in there to use later.”

Sophia’s diet is 50 percent plant-based. She tries to eat a lot of high-protein vegetables for her meals. For example, when she eats salad, she swaps out chicken for hemp hearts. One of Sophia’s favorite dishes? Rosemary and garlic-stuffed Branzini with some basil and Swiss chard. She also enjoys snacking on seaweed.

Sophia devotes 20 minutes of her 30-minute lunch break to doing Pilates. “I would just do like 10 or 20 minutes on my lunch break, and it really started to give me my spinal mobility back,” Bush told Eat This Not That. “I noticed my breath got better. It was definitely decreasing stress at work.”

Sophia’s favorite workout is boxing. “I love what it does for me mentally and physically. Boxing trains your mind in such a unique way. Plus, it’s great for my job—all of the stunt work I have to do on Chicago P.D. is only enhanced by my ability to do intense physical choreography when I’m boxing regularly. I work out with an amazing trainer in Chicago named Robbie Cole. He’s a scrappy English guy who kicks my ass, and we also laugh a ton while we train. I’m also trying to do more yoga—I feel like I’m always saying that, but it’s true!—because flexibility is key to strength,” she told Stylecaster.