We all know that physical activity is good for your health, and so ought to help with aging. Reinforcing that, a new large-scale study has begun to quantify the extent to which physical activity slows the aging process, as measured by the lengths of telomeres in white blood cells: Exercise helps keep the telomeres longer. Links to an article about the work, together with the study itself, have been posted in both Physical Exercise and Aging:
Does Exercise Slow the Aging Process?
Movement-Based Behaviors and Leukocyte Telomere Length among US Adults.