This workout is only 15 minutes! HIIT lets you can accomplish a lot in a short amount of time. Research shows that you can achieve more progress in a mere 15 minutes of high intensity interval training than jogging on a treadmill for an hour! The key is pushing hard during each exercise. You should be breathing heavy after each interval. Remember, the intervals are short but intense. When you safely push yourself out of your comfort zone you will see real results!
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