Maritere Alessandri in Bathing Suit Gets Her "Vitamin D"

Maritere Alessandri is enjoying the beautiful climate, ocean, and beaches in Miami, Florida. Alessandri shared a picture of herself soaking up the sun in a tasseled mint bathing suit, posing on a boat against a background of blue skies. "Vitamin D," she captioned the post. How does she stay so fit? Read on to see 5 ways Alessandri 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!

Alessandri incorporates weights and resistance training as a crucial part of her weekly workout routine. "Just doing aerobic exercise is not adequate," says Dr. Robert Schreiber, physician-in-chief at Hebrew SeniorLife and an instructor in medicine at Harvard Medical School. "Unless you are doing strength training, you will become weaker and less functional."

Alessandri loves mountain biking. "It's been shown that cycling reduces anxiety and depression," says Jaclyn Kubiak, PT, DPT. "Mainly, because you can make it fun. You get the added benefit of being outdoors or you can go do it with friends. You can change the intensity for it yourself," he adds. "It can be as easy as you want or as hard and enduring as you want."

Alessandri takes collagen supplements as part of her wellness routine. "As we age, the production of collagen slows and the collagen produced is less efficient – which underlies many of the changes we see with aging, such as wrinkling and sagging of the skin, joint pain, loss of height, and fractures," says Deborah Lee, MD. "The structure of collagen is organized with a complicated fiber system, with chains of amino acids arranged in fibrils, like strong ropes, to provide a tight and reliable support structure."

Alessandri loves boxing-based exercises. "Boxing requires the full body to move," says trainer Anthony Char. "From staying on your toes to engaging the core muscles or throwing a jab or a cross, there's a lot to think about, which makes it great for training both the mind and body. It's also a great calorie burner and can often burn more calories than cardio workouts such as running. It's a fun alternative to traditional cardio workouts like HIIT or swimming."

Cardio is a core part of Alessandri's workouts. "Try getting in a 30-minute workout five or more days a week that raises your heart rate for the duration of the activity," says clinical exercise physiologist Erik Van Iterson, PhD, MS. "Or try three, 10-minute workouts, five or more days a week."