Depending on lifestyle, your biological age can vary considerably. It would seem that we are in control of how quickly we age, and it's all the old culprits: how much you smoke, how much you drink, your exercise regime, your stress levels, and what you eat. But rather than fight the natural aging process all the way to the grave, is there another approach? Sven Voelpel is an aging specialist. His conviction: aging has many more positive aspects than we think.