I believe it is Fast-twitch muscle fibers. Slow-twitch fibers are used for people who exercise for a long period of time such as running, swimming, and cycling.
Answer:
This type of discoloration tends to be genetic, occurring more often in those with darker skin. It can also be triggered by frequent sun exposure. Allergies, alcohol consumption, which is dehydrating, and, yes, fatigue can also compound the problem.
Explanation:
Disordered eating is often __________.
Out of all the options shown above the one that best completes and makes the statement above true is answer choice A) an eating disorder that affects numerous teens.
I hope it helps, Regards.
