LES MILLS SPRINT is a 30-minute High-Intensity Interval Training (HIIT) workout, using an indoor bike to achieve fast results. A high intensity, low impact workout, it’s scientifically proven to return rapid results. The 30 minutes you put into a LES MILLS SPRINT workout drives your body to burn calories for hours. You combine bursts of intensity, where you work as hard as possible, with periods of rest that prepare you for the next effort. The payoff? You smash your fitness goals, fast.