After an ample warm-up, think high-intensity sprints followed by recoveries that are determined based on your fitness level. The more fit you are, the longer the sprints, and sometimes the shorter the recoveries.
The beauty of HIIT is that your heart rate will stay elevated the majority of the workout even during the low intensity period. The low intensity recovery phase allows for you to not exert as much effort as your heart rate begins to drop.
The fitness industry is a lot like fashion, where old trends come back into vogue but usually with a updated twist. If it's tried and true, and there's research to back it up, it will be back or here to stay.
Biggest Loser contestants are doing it, celebrity trainers do it, NASCAR drivers do it, pro sports teams are incorporating it into their conditioning programs. Here are five reasons why you should try it.
High-intensity intervals can be classified as brief exertions of maximum output, usually in the range of 20-40 seconds of intense activity, followed by a designated resting or recovery period. You could complete an entire high-intensity workout with minimal equipment in 20 minutes or less.