Brie Larson in Bathing Suit Says This is "All You Need"

Brie Larson, the Academy Award winning actress, aka Captain Marvel, is enjoying the summertime. Larson just posted a new set of photos on Instagram of herself doing different activities. In two of the photos, Larson is seen in a floral print bathing suit. She captioned the post, “Sometimes all you need is a sprinkler, a charcuterie board, a polaroid and friends!” How does she stay so fit? Read on to see 5 ways Brie Larson 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 Works With Experts

To get in shape for Captain Marvel, Larson worked with a personal trainer. She enlisted trainer Jason Walsh. However, Walsh told POPSugar that he had some other experts work with Larson. "For the first phase of training, I send every client to my colleague and good friend, who is a registered dietitian and MD, and they do blood work," he explained.

2. She Lowered Her Body Fat

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The main thing Walsh worked on with Larson was losing her body fat. He wanted her to lose fat and gain muscle. Walsh tells POPSugar that this was pretty easy for the actress. “It didn’t take us too long to get her where we wanted her body composition.”

3. She Ate Bridge Meals

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Larson worked with Dr. Phillip Goglia on her diet for the film Room. He says that he had the actress eat “bridge meals” to help her prepare. "The purpose of a bridge meal is to get to lunch so that you don't overeat lunch,” Dr. Goglia explained to People. You're using fat metabolism and that will be your bridge meal to get to dinner so that dinner is an appetite environment that will not allow you to crave carbs because you've already eaten… you're kind of full. You're not in low blood sugar."

4. She Starts Her Days With Protein Shakes

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Larson starts her mornings with protein shakes. Dr. Goglia tells People that this helps her train harder in her morning sessions. “The most recent science has shown that a little bit of fat and a little bit of simple sugar will actually increase intensity rate while you train early in the morning … and allow you to still continue to train and burn fat,” Goglia says. “That really does start your engine for you.”

5. She Weight Trains

Larson does a lot of weight training to help her stay in shape. She posted this video of herself using a barbell on Instagram. In it, she is seen doing squats with one side of the weight in her hands. Larson captioned the video, “No toes were hurt in the making.” Here's how to do a bicep curl, for example: "To do a biceps curl with a barbell, pick up the barbell with your palms facing away from your body. Place your hands comfortably apart on the bar. This is usually about shoulder-width apart. Keep your back straight, and tighten your abdominal muscles. Slowly curl the barbell up by bending your elbows. Keep your elbows close to your body. Then slowly lower the barbell to the starting position. You'll feel tension in the muscles in the front of your upper arm," says the Mayo Clinic.