[mac5732]

Well, all I can offer is from experience. I started walking 20 minutes every evening, increased after a week to half hr, within 2 weeks 45 minutes. Now when I say walk, its not the averagae walk of a person. It is a brisk walk, not running, or over exertion, just a brisk walk set at your pace. The results = in 2.6 months I lost 45 lbs, breathed better, was in better shape, felt better then I did for long time. Downside was, after the 2.6 months I tore my Achilles Tendon, had surgery, became a couch potato for a year and put the d... weight back on from lack of excercise. Along with the walking, I also watched my carbs, didn't eliminate them, just cut back, still hade my chocolate, chips, and pop. So IMHO, I'd go for the walk. Bikes are good as well, what you might consider, changing off, 1 day walk, 2nd day bike and see how it goes, This was 2 yrs ago, my foot is healed and I have started my walking again, when the weather isn't snowing out.. my 2 cents

Oh the walking had nothing to do with the Achilles Tendon, that happend when I was running after some people at work