What is the Closest Thing to the Fountain of Youth?

If someone asks me what is the one thing that I would recommend that as the maximum impact on promoting health and preventing the sickness, it would have to be physical activity. Exercise is the closest thing we have to the fountain of youth!

Over the last century, we have invented hundreds of machines and tools to make us more and more sedentary. But the fact remains that the human body is made to spend most of his waking hours in the upright position, moving fifteen to twenty miles a day. Ye...