Burn fat, lose weight, and reach your fitness goals faster with high-intensity interval training High-intensity interval training, or HIIT, is a fantastic way to lose weight and get strong by performing very short bursts of targeted exercise. The beauty of HIIT is that it works fast and the workouts are very short -- which means you don't have to dedicate a lot of time to working out, but you'll still get great results. High-Intensity...