Agustina Cherri in Bathing Suit Shares "Last Days of My Belly"

Agustina Cherri is bumping along in her bathing suit! The Argentinian actress, currently expecting her fourth child, shows off her baby bump in one of her latest social media posts. "Last days of my belly," she captioned the Instagram snap. How does she stay so fit? Read on to see 5 ways Agustina Cherri 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!

Agustina embraces her age. "It seems to me that at thirty I don't criticize myself at all. I am thirty and I am what I am because of the choices I made. The thirty came to me without question," she told Caras. "I think that if I look more beautiful it is because I feel better. The internal drives the external."

Agustina maintains that switching to a plant-based diet helped her lose weight. "The vegetarian diet clearly helped to look thinner," she told Caras. She also claims it helps her feel better. "I have better eyesight, hair and I wake up with more energy than before. Beyond the physical aspect, which is great because I work with my body, the change in diet helped me in a lot of ways."

Agustina also cooks her own food. "When I made the decision to be a vegetarian nine years ago, I studied macrobiotic cooking because I wanted to do it well. These are processes that must be carried out conscientiously and responsibly," she told Caras. "At home we prepare almond milk and know how to make it. We knead bread, we make homemade seitan, which is vegetarian meat, we have a day for each cereal and we eat quinoa, seaweed."

Agustina exercises, "because I like it," she told Caras. "I do Pilates but a strong style with my teacher, Federico Randazzo." "If you've been looking for a new workout routine that can give you a good balance of flexibility, strength, muscle tone and help for a few aches and pains, there may be an answer that's easier to get into than you think," says the Cleveland Clinic. "While Pilates has been around for nearly 100 years, it's still gaining traction among new converts, picking up new devotees all the time. And there's a good reason why it continues to be a popular mode of exercise: it works."

Agustina also does yoga. Here we start with the sun greeting. Alba and her mom," she captioned this Instagram image. The American Osteopathic Association explains that there are more than 100 different types, or schools, of yoga, the majority of them including breathing exercises, meditation, and assuming postures (sometimes called asana or poses) that stretch and flex various muscle groups."The relaxation techniques incorporated in yoga can lessen chronic pain, such as lower back pain, arthritis, headaches and carpal tunnel syndrome," Natalie Nevins, DO, a board-certified osteopathic family physician and certified Kundalini Yoga instructor in Hollywood, California, explained to them. "Yoga can also lower blood pressure and reduce insomnia."

Other physical benefits of yoga include:

• increased flexibility
• increased muscle strength and tone
• improved respiration, energy and vitality
• maintaining a balanced metabolism
• weight reduction
• cardio and circulatory health
• improved athletic performance
• protection from injury