High Intensity Interval Training, or HIIT

Movement in any form is a good thing, but for best results, our High-Intensity Interval Training is a great way to tone up and shred calories.

HIIT alternates between high-intensity and low-intensity exercises. Sprinting or walking fast for 30 seconds then walking at a slower pace for 60 seconds is an example of High-Intensity Interval Training.

HIIT can be used both anaerobically in the gym with weights and aerobically with cardio. Interval training allows people to exercise at higher intensity levels longer than steady-state exercises, and that burns more fat. In addition, there is an after-burn effect. HITT boosts your metabolism and allows your body to burn more calories for up to 24 hours after interval training. Going for a jog or a steady walk on a treadmill burns almost no calories after the exercise concludes.

HIIT is a super fast, very effective way to work out, and with the after-burn effect, working out everyday is not necessary. Your body needs time to rest and heal. Two one-hour workouts a week will help you achieve your fitness goals. Three times a week will help you achieve those goals a little quicker. Intense exercising more than three times a week can actually slow progress.

HITT training exercises the entire body, especially one major muscle — your heart. "When you turn up the intensity on your workout, as high-intensity training does, you’re making your heart work harder," says Jordan Metzl, M.D., an exercise physician and author of The Exercise Cure. "And since this muscle becomes stronger after putting it through tough training, this workout is very beneficial for your heart health."

Essentially, HIIT is crazy-efficient, which means spending less time in the gym while cashing in on all the fat-burning, metabolism-boosting and heart-pounding benefits.