Why physical exercise is necessary for fitness?

To get Healthy Muscles

It is common perception that people related to physical working group need no exercise to remain fit; it is wrong. To remain healthy and fit physical exercise is necessary for all. As learnt by experience that muscles unless adequately exercised or used become weak and inefficient day by day. So it is necessary to use the body muscles through exercise in order to remain physically fit. Importance of physical fitness can be estimated by the following lines.