I hear ya. When I was in San Francisco, my car battery died all the time because I didn't drive enough. I loved walking. I went in for a checkup once and my d

I hear ya. When I was in San Francisco, my car battery died all the time because I didn't drive enough. I loved walking. I went in for a checkup once and my doctor asked me, "Do you exercise?" I said, "Not really." He said, "What do you do?" I said, "I walk to and from work everyday. It's two miles from Russian Hill to Market Street up and down a few hills." He said, "I think you're doing fine."