Answer:
Muscular endurance training program
Explanation:
We sign up for this class because it will allow the muscle or group of muscles to sustain repeated contractions against a resistance for an extended period of time. This accomplishes our goal to maintan a muscle contraction for a long period of time without getting fatigued.
Her skin is working to protect her because of her sweat glands, which are producing sweat as a mechanism to cool your body during the intense heat. Also, there are melanocytes in your skin which produce melanin, which give your skin its pigmentation, and this also helps protect from the sun. In addition, if you apply sunscreen with a SPF higher than 15, that is pretty healthy protection from the sun as well, even though it isn't a natural defense.
