There are more than 630 muscles in your body. On average, your body weight is 40% muscle. Out of the 630 muscles, 30 of them are facial muscles, which help you create all those different faces of happiness, surprise, joy, sorrow, sadness, fright, etc.The muscles surrounding your eye are the busiest muscles in your body. Research indicates that you probably blink them more than 100,000 times a day.
And the biggest
muscle in your body
is the gluteus maximus (your butt).
Each muscle belongs to one of three categories: skeletal muscles, which move bones - smooth muscles, which control involuntary movements such as breathing and digestion, - and cardiac muscle, which is found in the heart. The job of a muscle is to move your body. Without muscles you couldn't move your skeleton. There would be no way to animate your physical body or even speak your mind. You wouldn't be able to blink, digest your food, breathe, pump your heart or have one for that matter since your heart is a muscle. You couldn't smile, urinate, defecate or sniff with your nose.
Muscles are a type of tissue that is composed of contractile cells or fibers. The cells or fibers actually contract! And when they contract, they create movement on the bone that they attached to. The really cool thing about muscles tissue is its ability to shorten (contract). Muscle tissue also has the property of irritability, conductivity and elasticity.Remember, there are three different types of muscle tissue:
Muscles work by contracting and relaxing. Pump your bicep for a second. Make a fist and bring it up to your ear. Notice how your bicep gets bigger when the muscle tightens and shortens. And when you relax your arm, the muscle gets longer and smaller. Muscles do not push, they pull. The tiny muscle fibers work like a sliding glass door on a track. And these tiny muscle fibers get their energy from the food you eat. Without food to feed the muscles, your muscles couldn't make the energy to contract. The reason you can move your arm back and forth is because muscles work in pairs. One is a synergist, the other a antagonist. It's a support thing and so they can pull in opposing directions.
Have you ever heard the term "Move it or Lose it!" This term can be directly applied to a sarcomere. A sarcomere is portion of a striated muscle fibril. Tiny pieces of your muscle. If you don't move and exercise those muscles by contracting and relaxing them, you will in fact lose 100 sarcomere's a day. YIKES! In order for a muscle to work, it has to cross a joint. Connecting from one end of a bone to the other without crossing the joint would be pretty much useless because it wouldn't be able to shorten or lengthen with the movement of the joint. So in order to bend your knee, the muscles in your thigh have to cross over to the other side of the knee joint and attach. Then when you tighten the muscle, the knee bends. Cool huh? The muscles that are voluntary get their signals from the peripheral nervous system, and it's because of this that the skeletal muscles are under conscious or voluntary control. The involuntary muscles (smooth and cardiac muscles) receive their nerve supply from the central nervous system and functions involuntarily without conscious control. It is possible to hurt a muscle because they can become pulled, hence "pulled muscle." You can actually tear a muscle the same way that a ligament or tendon gets torn or a bone gets broke. And the cool thing is, they can heal themselves with rest and time.
You must build the following muscles to hit a golf ball a long distance. They are the wrist muscles, the triceps, the legs and core muscles. During your workouts do exercises that will build strengh in the follow muscle groups. Within a short time you will add 30 yards or more to your drives off the tee.