HIIT has many advantages, including endurance building, metabolism boosting and fat burning. The interval-based side of HIIT helps you to push yourself to new levels in a short time, allowing improved heart health and blood flow. Our HIIT Heart Workout uses bodyweight exercises such as squats, lunges and jumping jacks, with specifically timed high- and low-intensity intervals. And EPOC gives you increased calorie burn long after your session with us.