Most HIIT workouts are about 20 minutes in length and have been shown in numerous studies to be better at burning fat than long aerobic exercises. HIIT is a very popular form of interval training for people looking to drop fat without spending two hours on the treadmill. Runtastic allows you to select from premade interval workouts or create your own.

You might do that until you’ve done four or five sprint sessions. For example, you might jog for three minutes, then sprint for one minute, followed by another three minutes of jogging. An interval workout is basically periods of relatively high output mixed with periods of rest or low output. The interval option is really awesome if you’re into interval training, like high-intensity interval training (HIIT).

You’ll select basic if all you’re doing is going for a nice long run where you don’t expect to change your pace much. The workout selection is really interesting: you can either chose a basic workout or interval workout. Activities are broken into a ton of different sports – you’ll probably select running 90% of the time.

Runtastic iphone