I had both of my knees replaced with bionic models in late 2010 and was happy to stretch out my new titanium parts on my San Francisco walks with Ella. We stayed with my sister Randi and brother-in-law, Larry, while the roof of our rig was being replaced. They live in the hills and valleys near Golden Gate park, and it made me realize how out of shape I was as we strolled a few up-and-down blocks. As time went along we added more blocks and finally walks that included stairs up the hill. Our last big walk included hills, several sets of stairs and a big big view from the hill we reached. Come take the walk with us. . .