What is Fitness ? - Fitness means the ability of the body to tolerate stress in all its forms - Like - A hard day in office. Fighting an infection with a germ invading the body. A skid on the road. Each and every stress to the body, be it small or big needs expenditure of energy and involvement of all the body's defenses. More oxygen has to be delivered at the muscles, more waste products have to be carried away. All these place extra demand on the circulatory system and strain the capacity of heart. How our body faces any stressful condition depends on our baseline of Fitness. For some of us, even leisure can be stressful. Exercise helps us in keeping fit. It helps in toning up the body for many eventualities.   

Many people believe that if you exercise a particular area of the body, the fatty tissue in the immediate area are burned up. No its wrong. If you bend the waist often enough you'll NOT trim down your mid section. The exercise we do burns up fat from all over the body and not from a specific area. Thus it is impossible to reduce  the amount of fat from a particular area without affecting the amount in other parts of the body. Thus, when we manage to reduce fat with the help of exercise and diet it has a general effect including the waistline. 

It has been shown that unexercised muscles deteriorate at a phenomenal rate. For the first three days that a person is immobile, he losses about one fifth of his maximal muscle strength. Immobility also affects other systems of the body like circulatory system, nervous system, digestive system, respiratory system.

While daily exercise is desirable it is believed that at least Three non consecutive days in a week is must to maintain adequate levels of physical fitness.