Yeah, Oak, I made a decision on some of the exercises. The paper Walter gave me says to do 2 sets of some of the exercises, but he never "told" me to do 2 sets. I know he copies this from a generic PT book and puts together an individualized program. So, I am just doing one set of each, except for one. There are a couple that only need to be done once a day.
Emily, when we went to Spain, the bike I had on the tour had a 25 on the rear. I don't know how I did some of those climbs on that, even in the granny. There were a couple I skipped because of this. I had a 25 for years, and then a couple of years after we moved to this neighborhood (the hill), I got a 27. Last year, it went to a 28. I really didn't need that, but my take on it is that I'd rather use easier gears as I age, as long as it enables me to keep riding!