Thanks, Billy. I had already discovered the Davis Phinney video & ordered it, awaiting delivery. Interesting that I only got 1 response to my post. Looks like using exercise videos is not a popular activity on this forum! I really need to get in shape so I'm hoping this video will help. Today when I went to my Parkinson's chorus practice on 10th floor, I walked up 10 flights of stairs, did 15 minutes of physical warm-ups with the chorus, and walked back down when I left. But I need to be more consistent every day. I like your approach of 2 15-minute sessions daily.