Friedrich Schiller

Set your sights high, the higher the better. Expect the most wonderful things to happen, not in the future but right now. Realize that nothing is too good. Allow absolutely nothing to hamper you or hold you up in any way.

Mind you, physical training doesn't necessarily mean going to an expert for advice. One doesn't have to make a mountain out of a molehill. Get out in the fresh air and walk briskly - and don't forget to wear a smile while you're at it. Don't over-do. Take it easy at first and build on your effort day by day.