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 percent to 91 percent of their 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.