Clearly none of the men amongst you has gone along to watch the Moonwalk (or the Sunwalk), which a/ raises a shedload of cash for charity, and b/ consists of 17,000 women all in their bra's
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If I hadn't power walked 2 marathons, it never would have occurred to me that I was physically capable of running. ( Possibly because I started out weighing the equivalent of two people).
Don't knock it unless you've tried it. My DH is a runner, but power walked a marathon for Macmilan last year. He reckons power walking is harder (at a decent speed) than running.