Orangetheory® Fitness is a scientifically designed, one-of-a-kind, group personal training workout broken into intervals of cardiovascular and strength training. Backed by the science of excess post-exercise oxygen consumption (EPOC), Orangetheory's heart-rate-monitored workouts are designed to get participants within the target-training zone of 84% to 91% of their maximum heart rate, which stimulates metabolism and increases energy. Led by highly-skilled coaches, each Orangetheory Fitness workout incorporates endurance, strength, and power elements through a variety of equipment including treadmills, rowing machines, TRX® suspension training, and free weights. The end result is more energy, visible toning, and the 'Orange Effect' – where participants keep burning calories for up to 36 hours post-workout (the Orangetheory Fitness 'afterburn') for an average of 500+ total calories burned per every 60-minute workout.