We may not possess demonstrated, working anti-aging medicine (yet), but you and I still have a great deal of control over how much we cut our health and lifespan short through neglect and poor choices. As noted at EurekAlert, and should be plain common sense, exercise is a principle key to maintaining your health for as long as is possible. "The implications of our work are that not only will physical activity potentially add years to your life as we age, but the quality of those years is likely to be improved by regular physical activity." Given the rapid pace of biotechnology and medical research these days, why would you risk shortening your life and missing out on healthy life extension technologies that will be introduced in the decades ahead?
Link: http://www.eurekalert.org/pub_releases/2005-11/uoia-eay111005.php