Welcome to Orangetheory Fitness, the energizing group interval fitness concept that is sweeping the nation!?Orangetheory Fitness has been featured in?The New York Times?as an effective new plateau-busting workout in which participants can burn up to 900 calories in a 60-minute session. Backed by the science of post-exercise oxygen consumption (EPOC), our heart-rate monitored training is designed to keep heart rates in a target zone that stimulates metabolism and increases energy.The result is the Orange Effect more energy, visible toning and extra calorie burn for up to 36 hours after your workout!