How Ageless Kate Beckinsale Keeps Her Body in Such Amazing Shape: Her Diet and Fitness Secrets

Credit: Dave Benett/Getty Images for Hugo Boss; Kate Beckinsale/Instagram (2)

How Ageless Kate Beckinsale Keeps Her Body in Such Amazing Shape: Her Diet and Fitness Secrets

How old is Kate Beckinsale? Whether she’s stepping out with a younger man — we’re looking at you, Pete Davidson and British comedian Jack Whitehall! — or wowing in a revealing gown on the red carpet with her toned legs, arms and abs, fans frequently wonder the  actress’ age. And time and time again, the Pearl Harbor actress — who, for the record, is 46-years-old — proves that age really is just a number. Part of the reason she’s in such great shape: The action hero star learned a thing or two about keeping an intense fitness regimen after leading vampire flick Van Helsing and helming the Underworld franchise. A client of celebrity trainer Gunnar Peterson and a regular at his Beverly Hills studio for five-plus years, the British star is dedicated to her workouts. “Kate is a six-day-a-week person,” Peterson told Us in August 2018. “She’s definitely up there among my hardest workers. I mean every single day is push, push, push.” “Anybody I’ve worked with, I think the reason they seek me out is because they know that we’re going to get the work done, it’s going to be safe, it’s going to be as fun as that can be and they’re not going to cut any corners,” adds the pro. “It keeps them on the straight and narrow that they hold themselves to.” And Beckinsale, who separated from her Underworld director husband Len Wiseman after 11 years of marriage in 2015 and later divorced, goes into every session knowing what she signed up for! “I start out absolutely dreading it, do an incredibly punishing workout, bitch about it the whole time, and end up feeling 100 percent better when I leave,” she told Shape in 2016 of her days with Peterson. Outside the gym, the mother of 20-year-old Lily (with ex and close friend Michael Sheen) keeps it healthy on the diet front too. Reveals Peterson, “She doesn’t have a sweet tooth.” Nor does she waste calories on cocktails. “I don’t drink alcohol. I feel [its effects] very quickly, so I’ve never actually had an entire glass of anything alcoholic," the star, who eats a predominantly plant-based diet, also told the fitness mag. Scroll through to read more fitness and diet secrets from the ageless Beckinsale and see amazing workout and body photos!

Credit: Dave Benett/Getty Images for Hugo Boss; Kate Beckinsale/Instagram (2)

How Ageless Kate Beckinsale Keeps Her Body in Such Amazing Shape: Her Diet and Fitness Secrets

How old is Kate Beckinsale? Whether she’s stepping out with a younger man — we’re looking at you, Pete Davidson and British comedian Jack Whitehall! — or wowing in a revealing gown on the red carpet with her toned legs, arms and abs, fans frequently wonder the  actress’ age. And time and time again, the Pearl Harbor actress — who, for the record, is 46-years-old — proves that age really is just a number. Part of the reason she’s in such great shape: The action hero star learned a thing or two about keeping an intense fitness regimen after leading vampire flick Van Helsing and helming the Underworld franchise. A client of celebrity trainer Gunnar Peterson and a regular at his Beverly Hills studio for five-plus years, the British star is dedicated to her workouts. “Kate is a six-day-a-week person,” Peterson told Us in August 2018. “She’s definitely up there among my hardest workers. I mean every single day is push, push, push.” “Anybody I’ve worked with, I think the reason they seek me out is because they know that we’re going to get the work done, it’s going to be safe, it’s going to be as fun as that can be and they’re not going to cut any corners,” adds the pro. “It keeps them on the straight and narrow that they hold themselves to.” And Beckinsale, who separated from her Underworld director husband Len Wiseman after 11 years of marriage in 2015 and later divorced, goes into every session knowing what she signed up for! “I start out absolutely dreading it, do an incredibly punishing workout, bitch about it the whole time, and end up feeling 100 percent better when I leave,” she told Shape in 2016 of her days with Peterson. Outside the gym, the mother of 20-year-old Lily (with ex and close friend Michael Sheen) keeps it healthy on the diet front too. Reveals Peterson, “She doesn’t have a sweet tooth.” Nor does she waste calories on cocktails. “I don’t drink alcohol. I feel [its effects] very quickly, so I’ve never actually had an entire glass of anything alcoholic," the star, who eats a predominantly plant-based diet, also told the fitness mag. Scroll through to read more fitness and diet secrets from the ageless Beckinsale and see amazing workout and body photos!

Credit: Courtesy Kate Beckinsale/Instagram

Stay Active at Home

Beckinsale isn’t one to let a bit of fun go by — or the chance for a joke. On October 15, 2019, the star posted a series of four photos of herself dancing joyfully in her apartment in a bandeau bra top and tiny shorts. “Won’t lie, got over excited when I went to go buy Halloween decorations so late and everything was 60% off so it turns out I’m not actually crap, I’m thrifty,” she wrote. The pictures all showed off her amazing abs, which she’d highlighted the day before in a post about pairing tiaras with appendectomy scars.

Credit: Courtesy of Kate Beckinsale/Instagram

Keep It Real

As Beckinsale has demonstrated, it’s way more satisfying to throw an actual punch at the gym than to just mime one. The British actress posted an Instagram video on September 30, 2019, that showed her punching a dummy with two consecutive jabs in the face. She threw the punches after completing an impressive abs roll-down and sit-up move borrowed from Pilates, making the maneuver a full-body exercise. “Yippee ki yay, motherf--er,” she captioned her post.

Credit: Courtesy of Kate Beckinsale/Instagram

Stretch on the Regular

The yoga isn’t for nothing — and neither are her daily stretches! On September 7, 2019, the Underworld alum shared a bedroom mirror selfie of herself wearing a fabric headband, an off-the-shoulder shirt and no pants with her legs stretched out to either side at a nearly 180-degree angle. “Home stretch,” she captioned the image, which had a yoga block and other exercise equipment in the background.

Credit: Courtesy Kate Beckinsale/Instagram

Have Fun With It

She may do serious workouts, but she makes sure she doesn’t take them too seriously. On June 20, 2019, Beckinsale posted a video of her expertly doing squats while holding a barbell over her head. Inexplicably, there is also a free-standing toilet with the gym equipment, which she sits down on at the end of her post. In her caption, she gives her personal trainer, Gunnar Peterson, a hilarious shout-out. “What sets @gunnarfitness apart from other trainers is not just the fact he’ll suddenly install a loo under the squat rack to entertain himself but it is a portion of it.”

Credit: Courtesy of Kate Beckinsale/Instagram

Rock the Basics

As the Widow actress showed in a May 2019 Instagram video, even classic exercises like the elliptical can be effective. You’ve just got to know how to work them. In the post, Beckinsale shows off her tight butt as she works out on the cardio machine that strengthens the lower and upper body. She noted that one of her trainers, Brad Siskind, “likes to subtly let you know which part of you he is going to torture for the session.”

Credit: Courtesy Kate Beckinsale/Instagram

Keep Shoulders Strong

Toned shoulders and arms help your body look proportional. As Beckinsale showed in a May 2019 Instagram video, she keeps her upper body strong with dynamic moves like tire flips. Here, she turns a 150-pound foam tire in the gym — a move that also works the lower body and core — with ease. As she joked of her hardcore move in the video’s caption, “Avail for farm work.”

Credit: Rich Fury/FilmMagic

Don’t Forget Your Core

Wearing a stunning Julien MacDonald cut-out gown at the 50th NAACP Image Awards on March 30, 2019, Beckinsale showed that her abs are far more than an afterthought in her workouts. As her trainer Peterson has told Us, they do compound moves that are triple rather than double, with the last part benefitting her core. Think: an upper body move into a lower body move, followed by a standing abs movement with a band or cable or a crunch variation.

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Go For Compound Movements

At the Vanity Fair Oscars Party on February 24, 2019, Beckinsale proved you don’t have to have just one “best” body part. The Widow star showed off supertoned arms and legs — which she gets through “lots of compound movements and giant sets,” her trainer Gunnar Peterson tells Us. “She alternates between big lower body movements” (think: squats and deadlifts) “and upper body movements [like] pull-ups and push-ups.” But she doesn’t stop the set there. Next comes a core movement — “it may be a reverse crunch, a side hip bridge or a cable rotation,” says Peterson — “followed by a quick, high-intensity burst for 15 to 120 seconds.” Then, he says, “we repeat, repeat, repeat, repeat!”

Credit: Rich Fury/Getty Images

If You've Got It, Flaunt It

Beckinsale knows how to show off her hard-won body on the red carpet, as she showed in a barely-there white lace dress at the Golden Globes on January 6, 2019.

Credit: Courtesy Kate Beckinsale/Instagram

Strengthen Your Core

The actress posted a video of herself performing diagonal cable pulls on a water wheel on Instagram on December 29, 2018. “If I’ve been especially well behaved sometimes, as a treat, @gunnarfitness lets me help with the @lakers manual toilet flushing system,” she joked in the caption.

Credit: Kate Beckinsale/Instagram

Go Big or Go Home

For Beckinsale, no workout move is too difficult to try — including the sled push she posted on Instagram on December 15, 2018. Indeed, her trainer Gunnar Peterson tells Us, “She’s definitely a do-your-own sets, do-your-own stunts kind of girl. She gets through it. She can do it with a poker face. But she is working.”

Credit: Dave Benett/Getty Images for Hugo Boss

Embrace Yoga for Targeted Strength

“Kate likes the pure yoga,” Beckinsale’s yoga instructor Mandy Ingber has told Us of the star, who stunned at the GQ Men of the Year Awards on September 5, 2018. “The yoga gives you the strength and muscle toning without the sort of overly worked out look, which I think is sort of why people come to me. Because of my clients — their bodies look naturally muscular but not overdeveloped. More like a dancer’s body.”

Credit: Kate Beckinsale/Instagram

Get a Workout Buddy

Beckinsale posted a video on Instagram on August 3, 2018, of a friend pushing her legs down repeatedly, as she stopped them before her feet hit the ground and raised them back up. “Women. The minute the men leave we get right back to pushing each other’s feet and talking about dicks and literature,” she joked of the core-strengthening move.

Credit: Joe Scarnici/Getty Images for Technogym

Show Your Confidence

“Kate is a lot of fun and loves embracing her youthful side,” a source tells Us of the star, killing it in a black crop top and matching tight skirt at a Rolls Royce X Technogym event at her trainer Gunnar Peterson’s home on August 30, 2018. “She’s very confident in her skin and is all about having a good time.”

Credit: Courtesy Kate Beckinsale/Instagram

Try Something Fun and New

For her 45th birthday in July 2018, she attended a goat yoga class with a bunch of friends, including Michael Sheen and their daughter Lily. “Best birthday ever,” she wrote on Instagram. “We all prayed that the goat’s blessings would happen on Michael’s mat and they did.” 

Credit: Kevin Mazur/Getty Images

Work Your Legs

“There is really no better workout for your butt and legs than squats,” Beckinsale’s yoga instructor Mandy Ingber has told Us. “I do this with Kate pretty much almost every single time.” 

Credit: Courtesy Kate Beckinsale/Instagram

Stay Flexible

“We don’t like to leave the house with a tight iliopsoas just in case there’s a rumble or one of us has to suddenly roll out of the car,” the star joked on a July 22, 2018 Instagram photo stretching with her daughter.