But even though your genes dictate your shape, it’s certainly not your destiny. Not only will cleaning up your diet and focusing on healthy, whole foods help tremendously, but so will picking up the right exercise program. And that, friends, is cardio. “The best way to lose fat is aerobic exercise,” says Yancy.
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Torching stomach fat isn't just about sculpting a crop-top-worthy tummy, though. It's about your health, too. There are two types of fat in your body—peripheral and visceral. Peripheral fat lives just below the skin, while visceral fat hugs your organs and increases inflammation, upping your risk for metabolic problems like diabetes and heart disease, says Yancy.
No matter where your fat comes from, though, cardio has your back. “It will target both visceral and peripheral fat,” says Yancy.
Though “any cardio is better than no cardio for fat loss,” says Bill Campbell, Ph.D., if you want to hedge your bets on rockin’ abs, go for high-intensity interval training (HIIT), or fast-paced interval workouts. “There are a lot of studies that pit HIIT against traditional cardio and it’s consistently superior for fat loss,” says Campbell, an associate professor in exercise science at the University of South Florida and the director of the Performance & Physique Enhancement Laboratory.
While nobody really knows why HIIT is so badass, researchers have a couple of theories. One: HIIT causes a significant release of growth hormones in your body, which helps burn fat. It could also be the “afterburn” effect; your metabolism gets a bigger boost for a longer period of time after a HIIT workout compared to a steady slog. Better yet, “HIIT gives you all the benefits of traditional cardio. It lowers your blood pressure, you get an endorphin rush, and it increases your VO2 max [a measure of endurance],” says Campbell. Score!
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Choose your fave form of cardio: Running outside or on the treadmill, rowing, stair-stepping—it doesn’t matter, says Campbell. “There’s no science to show that one form of HIIT is better than the other,” he says. Going with what you like most (rather than what’s trending now) will help you stick with it.
How often? Cap HIIT at three days per week. Again, it’s tough (we can’t emphasize that enough!), so you probably won’t want to do it daily anyway. Combine it with a strength workout like weight lifting a few times per week, and you’ve got a solid program. Oh, one more tip—if you do HIIT and strength together in one day, do your cardio after you hit the weights, says Campbell. (That way you'll still have plenty of energy to achieve proper form during those lifts.) Ready, set…go!