(Source: Shape Magazine (CAN/USA) September 2008 edition)
Push yourself now and you'll be able to stay active into your golden years, say researchers at the University of Toronto. They found that elderly men and women who did high intensity workouts during middle age had the aerobic power of people 10-12 years their junior. The higher your aerobic power, the easier exercise feels- and the longer you can go. To slow down your clock, work up a sweat on most days of the week.