Christine McGuinness in Bathing Suit Says Just "Do It"

Christine McGuinness in a swimsuit is getting ready for ITV’s The Games, a reality competition that’ll see her doing athletic challenges like trampolining and diving. She shared some pics and videos of her in action (including one with Will Njobvu), with a song playing: “Do It” by Chloe x Halle. (Other stars on the show will be Alex Scott, Chelcee Grimes, Chris Kamara and Colson Smith.) How does she stay so fit? Read on to see 5 ways Christine McGuinness 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. She Does Squats With Dumbbells

Christine McGuinness/Instagram

McGuinness has done squats with dumbbells. “To do a squat with dumbbells, hold a dumbbell in each hand and stand with your feet about shoulder-width apart. Let your arms hang straight below your shoulders. Tighten your abdominal muscles and slowly descend, bending through the hips, knees and ankles while keeping your spine in a balanced, stable position. Your knees should be centered over your feet and should not move ahead of your toes. Slowly return to the starting position. You'll feel tension in the muscles in your thighs and buttocks. Visualize yourself lowering your body into a chair,” says the Mayo Clinic.

2. She Stopped Counting Calories

Christine McGuinness/Instagram

McGuinness was eating way too little calories for a time, and called herself unhealthy. After having kids, she feels she is more stable. “In general, if you cut 500 to 1,000 calories a day from your typical diet, you'll lose about 1 pound (0.5 kilogram) a week. It sounds simple. However, it's more complex because when you lose weight, you usually lose a combination of fat, lean tissue and water. Also, because of changes that occur in the body as a result of weight loss, you may need to decrease calories further to continue weight loss,” says the Mayo Clinic.

3. She Does Plyometrics

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“Plyometrics are explosive exercises that increase speed, quickness and power. Most exercises include ‘jumping,’ in which the muscles exert maximal effort and force in short bouts or intervals of time. The goal is to move from the eccentric to concentric phase of a movement rapidly while using proper biomechanics,” says ACE Fitness.

4. She Does Bicycle Kicks

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“Core strength is key to a well-rounded fitness training program. Core exercises train your muscles to brace the spine, and they enable you to use your upper and lower body muscles more efficiently. A core exercise is anything that uses your abdomen without support, such as bridges, planks, situps, flutter kicks, bicycle crunches and fitness ball exercises,” says the Mayo Clinic.

5. She Was Diagnosed With Autism

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Her three children have autism and "I have been confirmed as autistic. It’s strange, but I’ve noticed there are little hints throughout my life that I’m autistic and more like my children than I ever could have imagined," she said. "My issues with food, my social ­struggles, how hard I find it to make friends and stay focused, and my indecisiveness. The way I float through life reminds me of how my eldest daughter Penelope is,” she told Hello. "It all makes sense now. And as much as I’m not totally surprised, it’s still been emotional for me to accept, but it’s a relief as well.”