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Kate Middleton Looks Impeccably Fit at 40 With These Healthy Habits

Even the Duchess of Cambridge works hard at staying fit.

Kate Middleton wears many hats (or shall we say tiaras), and regardless of how much responsibility she fulfills, the Duchess of Cambridge is a totally fit, extraordinary icon. Kate Middleton, wife of Prince William and mother of Prince George, Princess Charlotte, and Prince Louis, always looks downright amazing. At 40 years old, this mom of three and role model to many prioritizes health by maintaining these impeccably fit lifestyle habits, and it shows. Keep reading to learn more.

Kate Middleton prioritizes and maintains a healthy routine.

Kate Middleton playing rugby
JUSTIN TALLIS / Contributor / Getty Images

When you are royalty, you have staff to help with many of life's details. But when it comes to taking care of your healthy diet and fitness choices, that's on you. Middleton has clearly prioritized and maintained a consistent exercise routine, including during pregnancy (with prenatal yoga and walks, according to Marie Claire). Her appearance in every single fashionable outfit she wears is a true testament. But that's not all. This Duchess enjoys cooking dinner for her own family and manages her own workouts without the help of a trainer, according to Daily Mail. (Okay, we're impressed, too!)

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The Duchess of Cambridge runs frequently, performs crunches and planks, and lifts weights.

Kate Middleton
Max Mumby/Indigo / Contributor / Getty Images

According to Daily Mail (via Women's Health), Middleton takes staying in shape very seriously, working out for one hour daily. It's said the Duchess of Cambridge runs frequently and performs crunches. For the hard stuff, she spends time lifting weights. She has a favorite type of exercise, which happens to be planks. "It tightens her muscles," a source reveals to Daily Mail. Middleton does three planks, specifically "the basic plank, the side plank, and the prone sky dive," a source tells Daily Mail.

She enjoys cycling, rowing, ab work, yoga, and CrossFit training. Middleton even sailed in the Great Britain Sail Grand Prix this summer.

Kate Middleton GBR
Max Mumby/Indigo / Contributor / Getty Images

We're not done quite yet. Middleton's fitness regimen is also sprinkled with cycling, rowing, a Swiss gym ball for ab work, and yoga, which is a welcomed de-stressor, calming tool, and core muscle/strength builder (via Marie Claire). CrossFit workouts are sometimes on deck, too, which utilize weights, resistance training, squats, and running (via Women's Health). This summer, Middleton even participated in the Great Britain Sail Grand Prix, rocking an official GBR wetsuit and all, according to People.

Related: Tom Selleck Has a Secret To Staying Active at 77

She maintains a clean diet filled with lean proteins, fruits, and veggies.

chicken veggies

As far as her diet is concerned, Middleton has pretty much ditched most carbs and instead consumes plenty of lean proteins, fruits and veggies enriched with antioxidants, and healthy oils and fats. According to Marie Claire, Middleton has followed the Dukan Diet, which consists of lean protein, water, oat bran, and a daily walk for 20 minutes. It's based on reducing carbs to torch more fat.

She loves her smoothies.

Blueberry Muffin Smoothie

Kate Middleton reportedly enjoys sipping smoothies in the mornings and afternoons. They contain kale, matcha, spirulina, blueberries, lettuce, spinach, and cilantro. A favorite treat of Middleton's is berries mixed up with almond milk, and she favors seasonal fruit, a source tells Daily Mail.

Related: Queen Elizabeth's Sleep Routine—Revealed

She whips up a lot of her own home-cooked meals.

Kate Middleton cooking workshop
Pool / Pool / Getty Images

A sweet tidbit? Middleton enjoys cooking. Carolyn Robb, a British chef who worked at Kensington Palace for over 20 years, tells Racked, "Kate does quite a lot of the cooking … She comes from a normal background and a normal home where she's always cooked for herself. And what I've always heard is that William enjoys spending time with her family because they just eat together at the kitchen table like a normal family."

One of her favorite meals to prepare? Roast chicken. "In the evenings she indulges her hobby of cooking William's favorite supper, roast chicken," Katie Nicholl, Vanity Fair's royal correspondent writes, adding, "They are reported to own a sausage-maker, and she has started making homemade pots of fruit jam while her husband is at work."

Kate will be on the court for a great cause with Grand Slam 20-time winner, Roger Federer.

Kate Middleton playing tennis
Chris Jackson / Staff / Getty Images

According to People, the Duchess of Cambridge will be participating in a day of charity with a total tennis legend. This September, you'll find Middleton taking on the tennis court with Grand Slam 20-time winner, Roger Federer. The event will raise awareness and funds for two amazing causes Middleton cherishes very dearly, the LTA Foundation and Action for Children. On this day, children from East London, ages 8 to 15, will be able to embrace their tennis skills while hitting the court with Federer.

(Fun fact: Tennis is a sport both Kate Middleton and Prince William enjoy playing together!)

Alexa Mellardo
Alexa is the Mind + Body Deputy Editor of Eat This, Not That!, overseeing the M+B channel and delivering compelling fitness, wellness, and self-care topics to readers. Read more about Alexa