Hippocrates, the father of modern medicine said that, all parts of the body if used in moderation develop and age slowly, but if they are left unused they become defective in growth, susceptible to disease and age quickly. Physical exercise and activity is a pre-requisite for a healthy life.
Exercise also confers on the elderly, a sense of purpose and achievement.
They come to realise that they have more control over their bodies than they imagined. Exercises have a beneficial effect on the course and severity of many diseases. Low BP can also be raised. High cholestrol levels which are a major risk factor in heart attack and stroke are reduced by regular exercise. Heart attack is more common in those with sedentary habits.