I just got done listening to a podcast on Albert Einstein's Theory of Special Relativity. -- My Brain Hurts! --
But I did learn this:
When we're moving, we're bending the space-time continuum, which means time is going slower. When we're idle we're making no changes in the space-time continuum, and so time goes by faster.
SO:
If we're moving… working out, getting exercise… we're aging SLOWER.
If we're idle… sitting on our ass watching T.V… we're aging FASTER!
Perhaps, if I start running now, and if I run hard enough and fast enough, and do lots of zigzagging, maybe I can get back to my twenties.