why is it that most riders out in the winter tend to be fat? One would expect only hardcore cyclists/racers to be out when the weather grows harsh and unfriendly. I have gained about 8 lbs since summer due to heavy partying but I am also in fit conditions, so I ride in the winter as well. I have NEVER lost weight in the winter. So is my weight gain an adaptation to allow me the ability to ride when it's cold out? How should one explain this observation? Is it that gaining weight increases fat tissue and dermal layer in a person, allowing his body to effectively retain heat better? Your thoughts?