Type IIx<span> are best known as </span>fast-twitch muscle<span> fibers. These are the muscle fibers primarily responsible for fast, </span>explosive<span> movements like sprinting. However, they lack the endurance-boosting ability of </span>slow-twitch fibers<span> and can only be used for </span>short<span> periods of time</span>
Influences our intellectual development, emotional reactions, physical and mental growth.
Danger would become present when you are to put a great amount of strain on your body.
I feel like this is more of what friends you have but you could say hair color, height, eye color, etc.
