Do not tell anyone but we have discovered the secret to torching a ton of calories in next to no time. Yes, really. High intensity interval training – HIIT for short – is the science-backed way to stay in shape without spending hours in the gym. It is pretty intense but the key to HIIT success is to go at your own pace and gradually progress from novice to advanced moves. The good news is that HIIT A Beginners Guide is here to help those of all fitness standards, so buy this MagBook and prepare to get in the shape of your life!