The ideal temperature of the air for good health - 16-18 degrees. At this temperature a person does not feel cold and not «dying» from the heat. When the temperature reaches 8-10 degrees in the day, you may receive an Allergy, even in those who have it will not suffered. Try in this case, excluded from the diet of citrus fruits, red wine and spices. The sharp cooling increases the risk of heart attack, exacerbates the inflammation of the bronchial tubes and lungs. So dress warmer, even if in the street the sun.