The first common exercise build the heart stronger and the lungs fitter, enabling the cardiovascular system to transfer more oxygen to the body with every heartbeat and the pulmonary system to increase the maximum amount of oxygen that the lungs can take in. Second exercise create muscles stronger. In addition every physical work want muscle strength and some degree of range of motion in joints. Next exercise expand muscles and joints , which in turn can increase flexibility and help safeguard injuries. Another it increases the body’s level of endorphins , chemicals in the cerebrum that reduce pain and guide a sense of well-being. Furthermore to its other advantage, the improvement of older people remain independent regular exercise helps by functional ability and by preventing falls and fractures. Also it can firm the muscles of even the weakest older person living in a nursing or retirement home. Beside to introducing exercise for general health and well-being, doctors may assign specific exercise plans in some conditions. Finally before elective surgery, doctors may guide people take part in exercise routines to renew their recovery from surgery.