
3 Tips for Maxing Out a HIIT Workout Men's Journal. How Long Should A HIIT Workout Be Kayla Itsines. HIIT Interval Training For Beginners A 12-Week Running Workout Plan. Pro tip Learn the proper plan positioning here before you start this move. 2- mile interval workout Interval workout Hiit interval Sprint. HIIT Workouts Major Health Benefits Plus Sample Workout Plans.