Physical exercise.

Physical exercise means the regular movement of the limbs of our body according to rules.It is essential to keep our body fit and mind sound.There lies a close connection between body and mind.We can not think of a sound mind without a sound health.It is physical exercise which enables us to build a good health.Physical exercise makes our body active and the muscles strong.It also improves our power of digestion and bloos circulation.It gives strength to our brain.A machine gets rusted for want of proper use.human body is also a machine.It becomes inactive and weak for want of exercise.So we should take regular physical exercise in order to maintain a soun health and lead a happy life.