I wish I had a nickel for every time I’ve heard someone say that walking is a “lifelong activity.” When people use that expression, what they usually mean is that walking is a good exercise for when you’re old, and that’s a mistake that needs to be corrected. Walking is a great workout for anyone, at any age.  It’s really true that once you start walking regularly, momentum takes over. Because there’s so much pleasure and so little pain, it’s incredibly easy to get to the stage where you want to go for a walk if you just give walking a chance to work its magic.