This book is about iogging， an exercise program of relaxed<br >walking and running that will improve the level of physical<br >fitness of nearly anyone from seven to 70.<br > There is nothing mysterious or revolutionary about it. Jogging<br >is simply a unique application of the accepted principle that<br >regular exercise in moderate amounts is good for most people.<br > Jogging is free. It is convenient and enjoyable. It is safe.<br >It requires no special skills or equipment. And it can benefit<br >nearly everyone who is not ill or disabled. At the same time，<br >it has special benefits for the "over 30" and the "well over 30"<br >groups who no longer regularly exercise. Through jogging they<br >can recapture a level of physical fitness they thought they had<br >lost forever.<br > And jogging is reasonable. You can grow fit without greatly<br >changing your personal habits. Within reason， you can still eat<br >what you like . . . take a drink. Remember only that good sense<br >is the best guide to healthful living.<br >JOGGING IS DIFFERENT<br >1<br >5<br ><br >