When you wish to contract a muscle in order to perform an action an impulse is transmitted from the brain through the nerve to the muscle. Energy or Prana travels through the motor nerves, reaches the muscle and causes it to draw its ends together.
When the muscle contracts it pulls the limb which you wish to move. Now you can perform the action with ease. First there is thought. Thought takes form in action through contraction of muscles.
When you perform an action consciously message is given to the mind and the mind immediately obeys by sending a current of energy to the desired part. An unconscious act is done instinctively or mechanically.
People of easily irritable nature cannot enjoy peace of mind. They brain, nerves and muscles are always under high tension. They are wasting every minute abundant muscular and nerve energy and brain-power. They are a very weak people though he is endowed with physical strength, because he loses his balance of mind very easily. If you really want to enjoy unruffled peace and abiding joy, you must try to possess a calm, controlled and balanced mind by eradicating worry, anxieties, fear, anger, and impulses.
You do not gain anything by worrying yourself unnecessarily and manifesting anger for nothing at all. Anger belongs to brutal nature. Anger does injury to brain, blood and nerves. You are not profited a bit by exhibiting anger. By repeating an action, a habit is formed in the mind. If you worry yourself frequently, a worrying habit is developed. Your vitality and energy are simply drained by worry, anger, fear.
Why should you be afraid of anything at all, when everything is nothing but your own self?
Fear, anger and worry are the products of ignorance. The muscles and nerves of a victim of anger and worry are always under contraction and high tension.
The action of one set of muscles can be checked by the operation of another set of muscles. One impulse may try to put one set of muscles in motion and by sending another repressive impulse through another set of muscles you can counteract the action of the first set of muscles.
The science of relaxation is an exact science. It can be learnt very easily. Relaxation of muscles is as much important as contraction of muscles.
Relaxation is a very important factor in muscular exercises. Savasana Asanas all the muscles of the body are stretched and contracted to an enormous degree. During intense muscular activity, the metabolism is increased. Metabolism is the anabolic and catabolic changes that take place in the body (wear and tear in the system). The muscles that are put under severe strain demand relaxation and rest.
When you wish to contract a muscle in order to perform an action an impulse is transmitted from the brain through the nerve to the muscle. Energy or Prana travels through the motor nerves, reaches the muscle and causes it to draw its ends together. When the muscle contracts it pulls the limb which you wish to move. It is Savasana that promptly and efficiently ensures complete relaxation and perfect ease.