This is a subject I never see covered anywhere despite mentioning it in several of my articles in the past, but it is a vitally important issue which can’t in my mind be repeated often enough.
Carp are cold blooded. This means that the carp is the same temperature as the water it is living in. This affects the carp’s metabolism greatly and is the reason your bait choice is so crucial during the winter months but this is another subject for another place. Humans are warm blooded which means we are warmer than our winter surroundings.