HIIT workouts—otherwise known as high intensity interval training—are almost every trainer’s top choice for one reason alone: they deliver real results.”High-intensity interval training is basically any workout that alternates between intense bursts of activity and fixed periods of less-intense activity or even complete rest," fitness expert Tanja Djelevic told us as we were researching ways to cut our workouts in half and get faster results (spoiler alert: it’s actually possible). For example, proponents of HIIT would argue that running at full force with short rests in between would burn more fat and give more results than running at the same steady pace for the same duration; there have been numerous scientific studies that support this claim too.
Another benefit of HIIT workouts: they’re great for those who get bored easily (hear, hear!). Rather than zone out on the elliptical or treadmill yet again, HIIT workouts almost force you to stay focused—and thus, motivated—the entire time.
Few things are worse than a boring workout, or worse, a torturous workout that's ineffective, which is why we’ve gathered some of the best HIIT workouts from across the web in one place. Whether your prefer your HIIT via cardio or weights (or a mix of both), you’ll find a workout suited for your body-toning, fat-burning desires ahead. Keep scrolling to see them all!