Physical exercise means the regular movement of the limbs of our body according to rules. It helps to develop the growth of different organs of the body properly. Without physical exercise no one can enjoy a good health. It makes a man strong and active and keeps him free from diseases. He who takes physical exercise can build up a good health. On the other hand, he who does not take physical exercise regularly cannot build up a good health. There is a proverb in English that a sound mind lives in a sound body.