@ZMAN : Big YAY!!! Walking is better for your entire body, not to mention your mind, than almost any other exercise! My brother is an orthopedic surgeon. He said that walking is best for those over 45, as it builds bone density, helps manage weight, keeps the joints healthy and mobile, and is Great, mentally,as well!! I have not been able to walk the last 4 days, just the circus at this time, but I am back at it, tomorrow. I Miss it, when I do not get to walk! I listen to music or XM radio talk stuff. It is restorative, and taking a shower when I am done, then getting into my jammies and bed, Has helped my sleep patterns!