23 and 1/2 hours: What is the single best thing we can do for our health?

WATCH THE VIDEO below that goes with this picture.
I think it is one of the most convincing, succinct, and motivating health promotion videos I have ever seen.
This is such an important video, that I have added it here so it can be a permanent part of my blog and can be found more easily. If you haven't seen it, it may be the most important 9 minutes that you will spend today. Enjoy, them Time to begin exercise, maybe begin walking first!
http://youtu.be/aUaInS6HIGo