I went from the east side of town to the west side yesterday. I estimate it was a 25 mile ride. After that, I went contra dancing for 2 hours. I was beat when I got home. I had a terrible head ache when I got up the next morning, but I did get another 25 miles in. My headache is gone now. I think the bike ride helped. It was a beautiful spring day today, but the wind was very strong. The trees and the grass are greening up, and I think there is more oxygen in the air. I brought a couple of bananas with me, and they energized me when I turned around to go back home.