Factors to consider are the dry temperature, wet temperature, air movement, radiant temperature. The first factor is discussed. Sometimes chilly, sometimes warm, the comfort temperature of each is our own. The wet temperature influences many children and some adults, especially when winter flu is strong. The air movement is the most capricious factors, because it makes everybody unconfortable. Nobody easily tolerate an air stream in a restaurant. Radiant temperature is the most misunderstood, however most comforting, think at spring sun, the wood stove after a day of winter sports.