clipped from: fitnessblackbook.com I've been a fan of HIIT and interval training for well over a decade. It jacks up the metabolism, increases your natural fat burning hormone (HGH) and simply helps you lose a lot more body fat than diet alone. None of this is news to those familiar with interval training. What many people don't realize is that interval training also increases your ability to do endurance exercise. The crazy thing is that intervals may be more effective at increasing endurance than endurance exercise itself!
The Interval Training Study With Surprising Results
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