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

So, to add to my last post about needing to stop sitting, please watch the following 10 minute video.  My favorite line in the video is “Exercise is a medicine.”   In this well-produced segment, exercise is supported as the most important thing you can do for your health and it doesn’t require a lot of time each day.   Watch it and then go out for a short walk.  That’s where I’m headed now.   http://www.youtube.com/watch?v=aUaInS6HIGo