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The Science Behind High Intensity Interval Training (HIIT)


This BBC documentary explores the scientific research done by Dr. Mosley in the United Kingdom into high intensity interval training, which is characterized by short bursts of intense exercise followed by periods of rest.

The latest scientific research is finding that high intensity interval training (HIIT) not only vastly outperforms conventional aerobic endurance exercise, it also provides health benefits you simply can’t get from regular exercise. The difference is that these high intensity exercise regimes have been shown to provide a huge boost in production of human growth hormone (HGH), which has been dubbed the “fitness hormone” because of its profound health and anti-aging benefits.

Instead of having to spent hours at the gym, you can do high intensity interval training workouts at home or outside that can be completed in minutes, not hours.

The last part of the documentary also reveals some fascinating scientific research that examines the impact of sitting all day and the negative health effects of the modern sedentary lifestyle. In a nutshell, if you’re sitting all day at an office job, it won’t be enough to counter the negative effects to your health and well-being of being sedentary (even if you’re going to the gym at night). What you need to do is change your lifestyle so you get up and move each hour.

Watch this fascinating documentary to learn more about the science behind high intensity interval training. You’ll be surprised and shocked at what you learn.

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author: Kyle Pearce

I'm passionate about using meditation and technology to liberate people. I teach courses in flow psychology and I run a self-directed learning community.


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