What is HIIT?HIIT stands for high intensity interval training. HIIT is a method of working out in which you alternate low intensity moderate training for higher intensity training. High intensity training usually has less rest in between sets, and you are often working at very intense levels, whether is lifting more weight than you’re usually accustomed to, or sprinting harder than you would normally.

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HIIT TRAINING FOR RAPID MUSCLE GAIN – Empower Network

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