I’ve been having a problem with my hip the last couple of weeks and running is out of the question. My hip will start to feel better after a day or two, but any running, even a couple of blocks, the pain comes back. So instead of running, and in an attempt to keep my endurance at some level, I’ve been walking. For a couple of months now, I walk hills with a friend on weekend mornings, and a couple of weeks ago, I started walking with my daughter after work. I love running. Never thought I’d be writing that. But I do. And in past months, where I’ve gone walking instead of running, I’ve found it a little frustrating because I want to run. Lately though, because it’s all I can do, I’m starting to appreciate it again. I started out walking. And I liked it then. Then...