Many of today’s 50-year-old are in bettle shape, more alert, and more productiveThan their 40-year-old counterparts from a generation or two earlier. As more people land healthier lifestyles and medical discoveries help to stave off the aging process, the boundaries of middle age are being pushed upward. It looks like middle age age is starting later and lasting longer for increasing numbers of active,healthy, and productive people. A current saying is”60 is the new 40” implying that many 60-year-old today are living life that is as active, productive, and Healthy as earlier generation did in their forties