Science fiction is no more written for scientists that ghost stories are written for ghosts.
To me, what I love about the draft is first, you see the young men who are realizing their dreams that they've worked so hard for. That's a pretty cool thing. You saw the emotion from some of these guys the other day. And then, the second thing is this total sense of hope and optimism. And, I think that's great for everybody.
The most common objection that I hear to walking as exercise is that it's too easy, that only sweaty, strenuous activity offers real benefits. But there is abundant evidence that regular, brisk walking is associated with better health, including lower blood pressure, better moods and improved cholesterol ratios.