Michelle Hunziker in Bathing Suit Gives "Kisses"

Michelle Hunziker is brightening up social media with her latest swimsuit snaps. The model and television host wears a yellow bathing suit in a selfie taken on the beach while vacationing. "Smack 💋 smack smack!💋💋💋 un bacio grande!!!!" she captioned the post. How does the 45-year-old Swiss-Italian beauty maintain her fit physique? Read on to see 5 of Michelle Hunziker's top tips for staying 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!

Michelle maintains a healthy diet. ​​"I avoid sugars and simple carbohydrates. For example, we make bread at home and do not use double zero flour. We eat whole wheat pasta. I am convinced that sugar is a kind of poison for the body and I believe that most of the merit of my health, also of the skin, is due to this choice," she told Oggi. Why is this a good idea? Fructose, a basic component in table sugar, can't be used by the body for energy right away. Instead, it is stored as fat in the liver, spiking in the hormone ghrelin (the "I'm still hungry" hormone) that makes you crave more sugars. 

Michelle used to do active sports. "Up to 33 years of age I have always done only outdoor sports: skiing, mountain biking, running. But then I sneezed and my back got stuck," she said. She started doing restorative exercises, and hasn't stopped since. "It is there that I discovered postural gymnastics which, together with pilates, changed my life, I never had pain again."

Michelle maintains a healthy lifestyle, but stays away from restrictive eating plans "I've never really been on a diet," she told Grazia magazine, explaining that she has a fast metabolism. "I eat grilled meat, fish, vegetables, salad or rice," she added to Gala. Pairing lean proteins with fruits, vegetables, healthy fats and non-processed carbohydrates is recommended by most nutritionists and dietary experts. 

Michelle doesn't focus on the numbers on the scale "Only my husband uses our scales every day," she said during her marriage to Tomaso Trussardi. Regularly weighing yourself can be a good thing, helping you "stay on track with your weight loss or weight maintenance goals," registered dietitian Chelsey Ludwiczak, RD told the Cleveland Clinic. "It's like having a weekly budget. If you go over your budget one week, you want to know so you can fix it. If you don't realize you're overspending every week, it adds up." However, there can also be a downside. "If you have a history of eating disorders or anxiety about the scale, avoid weighing yourself for now," Ludwiczak says. "Speak with a psychologist or mental health professional about these concerns."

Michelle allows for one cheat day per week. "I pay attention to food for six days and I sin on the seventh day," she told Blick. Should you designate a cheat day? While some studies have found value in the motivational factor of anticipating cheat meals, others have found it's unsustainable.