OrangeTheory Fitness is a fitness franchise that offers group workout classes focused on heart rate-based interval training. Each session typically lasts 60 minutes and combines cardiovascular and strength training exercises. Participants wear heart rate monitors to track their performance, aiming to spend a specific amount of time in different heart rate zones for optimal calorie burn. The workouts are designed for all fitness levels and are led by certified coaches who provide guidance and motivation. OrangeTheory emphasizes community and accountability, encouraging members to achieve their personal fitness goals while enjoying a supportive environment.