Understanding the muscle movement required to master each exercise will help you get the best benefits from your HIIT exercises. Discover the physiology behind more than 90 key HIIT exercises to confidently and effectively master each movement. HIIT is the most effective type of exercise for improving fitness levels, improving cardio-respiratory health, and decreasing weight, according to recent scientific study. With annotated artworks that demonstrate the mechanics, angles, key muscle and joint activities operating beneath the surface of each exercise, safe alignment, and much more, Science of HIIT unveils the realities. There is no need to look further if you want to perfect your technical skills in your profession and create your own programme of various exercises to maximise the health advantages of HIIT.