Originally Posted by
David Bierbaum
My lower back pain is relieved by bicycling as well. I don't understand how it works, but my back never felt better than when I finally restarted bicycle riding to lower my cholesterol and my gas bill!

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It could be like mine, caused by L5 disc problems. I have had surgery once already. Prior to my surgery about 15 years ago I could hardly even move. I was pain free for many years but the last couple of years the pain has started again in a much milder form. The surgeon told me I would get about 10 years out of the surgery.
On a bike the forward bend position opens up the space at the back of the two vertebrae adjoining the disc and it tends to relieve the pressure on the nerve.