Hi Nan,

Always enjoy reading your post, great encouragement. I had been riding my excercycle. 1932 version with motor assist pedals, seat, and handlebars. 45 minute full ride (exert for 30 seconds, coast of 30). Five minute warm up and five minute cool down. Great fun.
http://www.exercycle.com/

I've been also working out 3x a week with Rock Steady Boxing. I enjoy the social aspect of our workout group, and coach that makes it fun. Even on sore stiff days I enjoy going.

I'm sidelined for a few weeks after lung surgery (Adenocarcinoma, so part of the lung is removed to help prevent the spread of the cancer). So I'll stick to just stretching for a few weeks. Other that that, all is good.