Here’s how it works: Each 60-minute class is led by certified coaches who deliver a science-backed workout with a focus on hitting your target heart-rate zone—a major difference between typical HIIT classes and Orangetheory. Expect half the workout time to be dedicated to cardio—on the rowing machine, treadmill, bike or strider—and the other half to intentional (and effective) floor work such as calisthenics, burpees and strength-based exercises with resistance bands, dumbbells and suspension-training devices. No gym anxiety here: Classes are designed for every kind of fitness level, with plenty of personalized guidance along the way. And the in-studio vibe? Always approachable, highly motivating and honestly super fun.