Today was my first day biking since I've moved. My commute used to be about a mile, and now it's a bout four. It was different, but, I definitely noticed my energy level being higher, and myself being more alert from it. My one mile commute was barely enough to keep me awake, now, It's a half an hour ride in what is usually pretty brisky wind (it was a cool 60 degrees this morning and I realized not long after that a light jacket couldn't hurt).
I enjoyed it though, and looked forward to the ride home (despite that it's mostly uphill home).
I think I'm gonna enjoy it even more once I get a new bike.
GR