Base. Push. All Out. Fitness, meet science. The idea of Orangetheory is this: a 60-minute full-body workout, half endurance and half strength and power. The workouts are designed to push you into the Orange Zone. This creates "Excess Post-Exercise Oxygen Consumption," or EPOC. It's what helps you continue to burn calories for up to 24-36 hours after your workout and gives you noticeable, lasting results with Orangetheory Fitness.