Kaley Cuoco in Bathing Suit is "Beautiful"

Kaley Cuoco is expecting her first baby with boyfriend Tom Pelphrey—and the actress is glowing. Cuoco shared a picture of herself wearing an black two-piece swimsuit, lovingly cradling her baby bump. “Honestly the most beautiful preggers I’ve ever seen… you shine and radiate nothing but the most beautiful energy with this belly,” one friend commented. How does she stay so fit? Read on to see 5 ways Cuoco stays in shape and the photos that prove they work—and to get beach-ready yourself, don't miss these essential 30 Best-Ever Celebrity Bathing Suit Photos!

1. Lower Body Exercises

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Cuoco is disciplined when it comes to her workout regimen. “She really likes to work hard,” says her trainer George C. King. “Kaley is interested in her lower body, especially her butt, her legs and her abs,” he says. “We do a lot of lunges, squat jumps and regular squats, plus leg curls and dead lifts.”

2. Ab Workouts

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According to King, Cuoco does 20 situps, 15 hanging knee lifts, and a 60-second elbow plank on the ground or on a stability ball for one abs circuit, repeating each circuit three to four times with 90 seconds of rest in between. “It’s all pretty basic: crunches, situps and knee lifts,” he says.

3. She Loves to Hike

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Cuoco incorporates plenty of hiking into her workout routine. "Trekking up a mountain is a lot like climbing the stairclimber or doing lunges over and over, which strengthens your glutes, quads, hamstrings, and calves," says Joel Martin, PhD, an assistant professor of exercise, fitness, and health promotion at George Mason University. "To go downhill, your glutes and quads need to do a lot of slow, controlled work to stabilize your knees and hips so you don't fall.”

4. She Practices Yoga

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Cuoco loves yoga, including hot yoga. "Doing yoga five times a week has transformed my body," she told Shape magazine in 2017. "I love being toned and having muscle; it's so sexy and beautiful. And I owe it 100% to yoga."

5. Cheat Day Is a Must

Cuoco says one cheat day a week in a non-negotiable. "I have to have a cheat day. I know when I'm being good all week long that come Sunday, I'm going to lie by the pool, have a drink, and eat some pizza," she says. "Then I wake up on Monday morning and I'm all ready to start the week again. I'm just going to be in a bad mood all the time if there's no light at the end of the tunnel."