5 days ago the sun was out bright but only 42 degrees and I wanted to ride...which I did. I was warm all over being dressed well and the only area I felt the cold was in the neck and jaw. I felt it to be not a problem therefore riding about for about 2 hours. Adding here that prior the ride, I had a bit of a sniffle but not being bothering as a cold. Anyway, the next day I was really sick, congestion, coughing sneezing and all the aches and all that goes with it. Well, even now I am weak, tired and sort of dopy !! My conclusion, maybe at my age, I better wait for the much warmer days to ride. Some say one doesn't get a cold or flu from being out in the cold as I was but I no longer believe that. I put the bike in the garage, trickle charge on and it will stay there until well....warm weather in the spring.