Chahatt Khanna in Bathing Suit Has "Old Pic but Epic"

Bollywood actress Chahatt Khanna is posting some throwback photos, much to the appreciation of her fans. Khanna shared a picture of herself wearing a black two-piece swimsuit, posing in the sand. "Old pic but epic," she captioned the post. How does she stay so fit? Read on to see 5 ways Khanna 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!

Khanna adapted the keto diet before a filming project. "Yes I have taken to the Keto diet for an upcoming project and I must say that I have never felt better," she says. "I have never felt more energetic and focused. However it's important to do it in the right way because it can all go wrong very easily. It's important to have a dietitian to guide you once you take it. I have been under great guidance and I have been preparing for something very important. So let's see how it fares. One day at a time and I wish to see some miraculous changes very soon."

Khanna loves fresh fruit, especially cherries and mango which she calls her weakness. "Vitamin C is good for immunity," says Maya Vadiveloo, an assistant professor in the department of nutrition and food sciences at the University of Rhode Island. "It's an antioxidant so it can help with oxidative stress in the body. The primary benefit, in addition to being a really good source of vitamin C, is that (mangoes) are a decent source of vitamin A, folate and are pretty high in fiber, which is beneficial for colon cancer prevention, heart disease and weight control."

Khanna starts the day with a delicious cup of black tea. "Black tea packs a punch when it comes to heart health. Theaflavins help to lower blood cholesterol," says UCLA Health. "And flavonoids — the same antioxidants found in red wine, dark chocolate and nuts —reduce the risk of heart disease by 8%. Studies show that with every cup of tea you drink daily, you can lower your blood pressure, the risk of major cardiovascular events (such as heart attack and stroke) and the threat of death from heart disease."

Khanna is a talented dancer. "When you begin moving, you immediately release the brain chemicals dopamine, adrenaline, and endorphins, causing a powerful and lasting effect I call 'energized optimism,'" says Kelly McGonigal, PhD, a leading health psychologist who studies the mind-body connection, and author of The Joy of Movement. 

Khanna calls herself a "coffee person". "There aren't a lot of downsides to drinking moderate amounts of coffee — and in fact, it can have positive effects on your health," says Devon Peart, MHSc, BASc, RD. "Coffee contains about a thousand different botanical compounds."