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In our body, everything one needs is actually just within it, which makes our body amazing construction wise. Among the most controversial facts about people in the gym is steroid, though amazingly, the body produces them naturally. This natural form is called cortisol, and they are produced during times when the body goes through stressful situations. Splendid anatomy isn't it? Here, let me discuss briefly what a muscle is made of.

The muscle is the contractile unit of the body. The functional unit is called a sarcomere, and this small structure represents the entire bulk of the biceps or the triceps or any muscle at that. This unit is still made up of small structures that function in amazing ways in order to get you moving.

In other words, the muscle makes the body move. In its absence, there will be no movement. Try to look at people who have cerebrovascular accident; their primary problem is paralysis, or the inability to execute movement due to a muscle's inability to contract on a cellular level. That means, those small sarcomere units are not functioning as they should because they are not innervated or there is no neural supply from the higher brain centers. In the absence of this connection, the functional unit does not receive motor instructions from the higher brain centers thus will not contract, leading into paralysis.

A muscle that does not move because of paralysis undergoes a spiraling downward effect that makes your muscle shrink over a period of time. As soon as you look at a stroke person, you will notice that the muscles on the affected side are shrinking. This is certainly due to a condition known as atrophy. In contrast when a person exercises and constantly does so, his muscles will undergo a process known as hypertrophy, the exact opposite of atrophy, which is increase in size. However, scientific studies reveal that after two weeks of exercise, muscles will grow in size or hypertrophy, but that effect will be completely reversed in a few days.

Exercising should be a lifestyle to maintain its effects on muscle as a result. It should not just be a one-time event. This should be part of your lifestyle. When one exercises, he should not stop in order not to reverse its effects. Our muscles will remain well sized and strong when one maintains proper exercises. Your health continues to see greater days as you experience fitness on a daily basis as you continue to exercise.