Pilates guru Brooke Siler, author of The Women’s Health Big Book of Pilates, has helped tone and transform the bodies of her devotees for more than 20 years, including celebrities such as Madonna, Zooey Deschanel, Liv Tyler and Kirsten Dunst. Siler is one of the few Pilates instructors to have trained under the tutelage of Joseph Pilates’ protégée Romana Kryzanowska. In other words, Siler really knows her stuff.So we were curious — what does a Pilates guru eat every day? Naturally, she’s just as skilled at picking healthy foods to munch on throughout the day as she is at whipping your core into shape.

Breakfast: Lemon water, tea and an egg white omelet with spinach

Breakfast: Lemon water, tea and an egg white omelet with spinachSiler starts each morning with water infused with lemon, followed by a cup of red tea, also known as rooibos, which is loaded with anti-aging, disease-fighting antioxidants. For breakfast, she whips up an egg white omelet with spinach, along with some nitrate-free bacon if she has time to cook it. “I am allergic to egg yolk so I always go for the whites and love the high protein content,” she said. “I love spinach, and getting in veggies first thing in the morning makes me feel better about the day. The bacon is purely for the pleasure principle.”

Lunch: Salad with grilled chicken and vegetables

Lunch: Salad with grilled chicken and vegetables“I love salads with loads of veggies, especially winter root vegetables,” said Siler. She always add grilled chicken on top to get in filling protein.

Snack: Green apple with almond butter

Snack: Green apple with almond butterSiler has an arsenal of healthy snacks that she reaches for, depending on what she’s craving that day. Her go-to snacks are green apples with almond butter, a handful of sunflower seeds, a piece of dark chocolate, or some cerignola black olives. “Depending on the sweet or salty taste-factor of the moment, I’ll choose one of the four,” she said.

Dinner: Petite sirloin with broccoli

Dinner: Petite sirloin with broccoli“I am definitely someone who craves red meat, so when I can find a nice petite sirloin at the butcher I’ll have that with almost an entire head of broccoli,” said Siler. “I’ll eat just about any vegetable, other than lima beans, but I always gravitate toward broccoli.” When she’s not in a meat-eating mood, Siler will have tilapia or sole breaded with gluten-free Late July crackers. “It’s a family favorite,” she said.Related Articles: Eat Like a Nutritionist: Keri GlassmanEat Like a Trainer: Kira StokesEat Like a Food Psychologist: Brian Wansink