<span>Slow twitch muscle fibers. They help enable long endurance, which would be useful for marathon length running.
Skeletal muscle fiber is encircled by a plasma membrane called the sarcolemma, which holds sarcoplasm, the cytoplasm of muscle cells. It gives the cell its striated appearance.</span>
1. Do the exercises slowly, surely and smoothly. Avoid doing abrupt movements so as not to strain your muscles.2. When doing the exercises, make your you execute them properly. For example, when lifting weights, lift them all the way up and all the way down.3. Use spotters for support and to avoid accidents.
Motor Unit Summation<span> - the degree of contraction of a skeletal muscle is influenced by the number of </span>motor units<span> being stimulated (with a </span>motor unit<span> being a </span>motor<span>neuron plus all of the muscle fibers it innervates; see diagram below).</span>
<span>The option which is the least important to consider before choosing a fitness activity is B. the popularity of the activity. It doesn't really matter whether an activity is popular and if a lot of people are doing it, you should do whatever you want to do. So, your personal interest, the cost, and time commitment are things you need to consider before opting for an activity, and you don't have to think about its popularity really.</span>
Answer:
to sweeten it is one of them
Explanation:
