Just wondering if anyone uses a recumbent bicycle for aerobic type exercise? I've only used one at PT and am curious to know if I would have to spend a lot of money to purchase one. I saw one advertised at K-Mart for $100. I doubt if they let you try them out. I don't really care about all the bells and whistles - maybe an odometer and a comfortable seat. Any suggestions on brands/price I should expect to pay? (I live in a small town, so maybe I should check out used ones in a city?) My doctor wants me to break a sweat, but not walk on the treadmill because it is too jarring for the spine. He wants me to get my heart rate up so that natural endorphins will kick in. I like the fact that this kind of bike supports your back while using your legs.