Kate Beckinsale in Bathing Suit Shares Sneak Peek Behind the Scenes

No pain, no gain! Kate Beckinsale, 48, continually wows fans with her ageless body. Whether rocking a bikini or red carpet attire, the actress looks incredibly toned, taut and slender. Today she shared some behind the scenes footage of a new ad she’s shooting, clad in a swimsuit. “BTS fun in Turks -also reminder that girls and some boys like amazing skincare for Xmas @mrvlskin,” she captioned it. How does she stay so fit? Read on to find out how Kate Beckinsale keeps her body in perfect shape—and to get beach-ready yourself, don't miss these essential 30 Best-Ever Celebrity Bathing Suit Photos!

1. She Does Yoga

“You’ll find yourself in Bulgaria, and you don’t know anyone, and they’ll say, ‘Well, we have a trainer who’s available, and he’s literally called The Punisher,’” Kate told Women's Health. The magazine says she “packs yoga workouts recorded by Jessica James and Mandy Ingber.” “I haven’t been injured while doing an action movie, and I think it’s partially from practicing yoga," she said.

2. She Does This Exercise

Kate recently revealed some of the workout moves responsible for her famously fit figure and also showed off her majorly impressive flexibility. She started out by executing a series of hanging leg raises, followed by knee raises on a pull-up bar. Next up, battle ropes! However, instead of getting just a hardcore arm workout in, the actress added a side lunge to the mix. To complete the workout, Kate’s helped her do some stretches, revealing just how flexible she is. “Do you have any bones? Omg,” singer Peter Frampton commented. “Damn, the only way I could get either of my legs that far back would be to amputate it and hold it back there with my hand,” joked one of her fans.

3. She Puts the Work In

One of Kate’s trainer’s Brad Siskind of Gunnar Peterson’s gym, revealed that Kate’s workouts are always this intense. "The whole hour is work," he told Women’s Health. She generally begins with a full-body workout composed of eight compound exercises, each working two muscle groups simultaneously—as can be evidenced in her latest workout video. Other moves include biceps curl as she squats, or situps with combination punches. Following the intense set she will complete 90 to 120 seconds of a cardio interval, like rowing or the VersaClimber, then repeat the entire circuit with heavier weights, added bands, or faster reps. Finally, following the 45 minute circuit workout, she’ll finish with a cardio interval using a rubber Inertia Wave, or one-leg pushes on a curved SkillMill treadmill. And, last but not least, she will do stretches.

4. Sometimes She Does “Two-a-Days”

Rachel Murray/Getty Images for Christian Siriano

"I wake up, eat something, and go straight to the gym," she told Women’s Health. "If I’m going to do cardio, I’ll do it later on in the day," she said.

5. Sometimes She Trampolines

Rich Fury/Getty Images

Kate has been known to trampoline. “It makes you feel kind of jolly!” she said. Fellow star Eva Longoria is also a fan. "Take the time to find your own rhythm," she captioned one post.