HIIT stands for high-intensity interval training. “This refers to tough quick, intense bursts of exercise, followed by short recovery periods. This type of training gets and keeps your heart rate up, while also (typically) decreasing the overall amount of time you spend training. This workout is great for burning fat because the intense intervals help kick-start the process known as excess post-exercise oxygen consumption (AKA the “afterburn effect”), which helps you burn more calories even after you stop working out as your body has to work harder and take in more oxygen to return to its resting state.Combination of high intensity interval training, functional training with Cardio. Hiit is an all out effort over a period of time with a short break of recovery. This class is a highly effective, high intensity, and high fatburning 45 min class.