Thank you both for the information. Jeff, do you have a Theracycle? It seems they are very expensive and the only one out there that does the assisted peddling. We have a swimming pool but I discovered when I tried to swim my core body just didn't have the muscles enough to keep me from sinking! HA! What a shock! At least I had the sense to stay in the shallow end. I applaud your cycling every day! We decided to get a treadmill-- used---so at least I can walk in the shade. It's been around 90 and humid every day for a couple of months so walking on the street does not work. My husband had a stroke about 5 years ago and he is doing well, and can use the treadmill, too. We can get them "used" for around $200 so that is really cost effective.