It works for me, in a really remarkable way. My bike broke down twice last year, and I couldn't ride for over a week each time; it was really remarkable to noti

It works for me, in a really remarkable way. My bike broke down twice last year, and I couldn't ride for over a week each time; it was really remarkable to notice how dramatically my mood improved when I got the machine back. I hadn't noticed that I was getting depressed, but I sure noticed the feeling after I got back on two wheels - like drawing in a deep breath, as clarity and calm returned. Sometimes I use the bike that way on purpose, not to go anywhere but simply to improve my mood. A quick run out east on the highway, up to the mountains and back, will usually knock me out of whatever loop I've got stuck in. I think it has something to do with the way that you have to stay present, immersed in the moment, aware of everything going on around you; there's still some room in the brain for higher-level thought, but you have a base of calm presence to work from.