What to Expect
As with any training program, results may vary. However, treadmill HIIT can lead to fast weight loss results; more importantly, fast fat loss results compared to steady-state training at a moderate intensity. A realistic, and attainable, weight loss goal using three 20- to 30-minute HIIT workouts per week is 1 pound per week. You may lose more or less, but this is the average amount of weight loss to expect. Pushing yourself to exercise at near maximal effort will lead to optimal weight loss results. It’s worth noting that HIIT promotes fat loss and helps maintain lean muscle mass, whereas steady-state exercise may lead to small decreases in lean muscle mass over time. It’s the body fat you’re really looking to lose, and losing 1 pound of pure body fat per week will help tighten your waistline fast.