Interestingly enough muscle tissue activity increases when an individual partakes in high intensity exercises. In order to obtain the desired results, one must focus on the muscles that can impact the production of human growth hormones (HGH). This is crucial because increasing the amount of HGH in the body lead to health, strength and longevity. There are three types of muscles found in the human body, slow twitch, fast twitch, and super-fast twitch. However, through high intensity exercises, the super-fast twitch muscle is activated, which directly affect many of the genes involved in fat metabolism. Thus, the super fast-twitch muscles are the only one capable of bettering the body in such a way. These super fast-twitch muscles are 10 times faster than the slow twitch, therefore, activating them is important for producing HGH.