> and the physical exertion keeps you warmer than you would be on foot. Only if you are not sweating. Once you sweat its game over. You are probably thinking

> and the physical exertion keeps you warmer than you would be on foot. Only if you are not sweating. Once you sweat its game over. You are probably thinking of very short pre sweating distances. Only way to bike moderate to long distance is to dress in layers and shed layers as you get warm and let the moisture get out. You also need moisture wicking base layers and moisture expelling mid layer.