Where does all the speed go when the weather is cold? Anyone running a power meter to determine where the losses are or is it mostly psychological?
My PRE and heart rate are higher in cold weather, but I tend to lose about 3 MPH off my average speed when it is cold. Denser air? Increase in rolling resistance? Power losses due to resistance of clothing? Calories being used to maintain body heat? All in the head?
Anyone else losing significant speed in the cold?