Kayla Simmons is having some fun in the sun in her swimsuit. In a few recent social media posts the college volleyball star shows off her fat tummy in a bathing suit while on vacation. "Perfect day," she captioned an Instagram Story of herself lounging around in a swim top. In another post she swims in the ocean. How does the athlete approach physical and mental health? Celebwell rounded up her top lifestyle tips. 

Kayla spends a lot of time in the ocean swimming and snorkeling. "Happy world oceans day," she captioned a post of herself snorkeling. In addition to being a great aerobic exercise and burning calories, other health benefits of putting on a mask and fin may include improved cardiovascular function, stress reduction, mood enhancement, and muscular toning. 

Kayla enjoys surfing, a water sport with lots of health benefits including cardiovascular fitness from paddling, shoulder and back strength, which also strengthen from the paddling, and leg and core strength. "Once you're standing up on the board, strong legs and a strong core will keep you up," the Australian government's Better Health says. 

You can find Kayla curled up in bed with a good book when she has some down time. "Cozy," she captioned a post of herself reading. Why is reading a healthy habit? One Harvard study published in Social Science & Medicine found that people who read books regularly had a 20% lower risk of dying over the next 12 years compared with people who weren't readers or who read periodicals. 

Kayla also likes to hike "Hawaii has my heart," she captioned this photo from one of her hikes. According to the National Parks Service, the physical benefits of hiking include:

• Building stronger muscles and bones
• Improving your sense of balance
• Improving your heart health
• Decreasing the risk of certain respiratory problems

Kayla, the "world's sexiest volleyball player," blasted plastic surgery rumors during a Q&A on YouTube. "I got zero silicone. I'm all natural, I'm sick of answering that one, but yeah," Simmons responded when asked, "How much silicone did you get?"