That's cool, that feeling one gets while riding. I had it going on yesterday. Even extended the miles I was feeling so good. About two miles from my truck (had met others for a ride) I noticed I couldn't focus on the white line. DARN, a migraine headache!
I had to ride back to the truck half blind, sit in the hot truck for 30 hot mintues till I could see well enough to drive home. That ruined the day!
