I am a 71 year old male in reasonably good health except for high blood pressure.  I'm not a couch potato but I don't have an exercise routine.  My doctor has recommended daily exercise to go with the medications I take and I would like to acquire some sort of device that would be appropriate for my circumstances.  I have a stationary bike and perhaps a good daily regimen on its use would satisfy my needs.  I'd appreciate any opinions from some of you experts on the matter.