Testing in a refrigerated studio found that the most efficient temperature for cycling is 55°. Yes, they used fans. I think that's very true. One can put out more power for longer if one can get rid of the heat easily. It's going to be 20° here tonight and still be below freezing Sunday morning, so we won't be going for a ride. We had a series of huge storms all week with resulting flooding, so there will be spots which were flooded Saturday morning. One go-down can spoil your whole season.