Japan has the highest life time expectancy in the world of approximately 76 years for men and 82 years for women. Yet, the sedentary life-style of the modern society has a number of adverse effects which can be counteracted by leisure-time activity. The decrease of maximal oxygen uptake by 0.3-0.5ml/kg/min per year illustrates the reduced physical activity of advanced age. Documented effects of physical activity include a beneficial influences on the cardiovascular, muscular, and skeletal system. Of note, not only does leisure-time activity prevent disease and increase in life time expectancy, it also enhances the quality of life by the ability to perform daily tasks independently at advanced age. Indeed the quality of life may be defined by this ability. Thus, it is agreed that people need to be more active more often.