When people take a bath, the skin temperature will drop due to the alternation of hot and cold water. In order to maintain the body temperature, the body will continue to dissipate heat, so that the heat inside the body will radiate out through the skin surface, resulting in heat loss. When we walk out of the bathroom, the body heat loss continues, and the skin surface is still in a state of heat dissipation. If we blow air with a fan or a hair dryer at once, it is easy to feel cold in this state.
2. Moisture produces evaporative cooling effect on the skin surface.
When a person takes a bath, water will remain on his body and hair, and it will evaporate immediately when he encounters air. Heat will also be lost in the process of water evaporation, leading to a drop in body temperature, which makes people feel cold. Coupled with the relatively high wind speed of the blower, the evaporation speed will be faster, thus aggravating this cooling effect.
3. The sensitivity of the body to temperature changes increases.
When taking a bath, the water temperature and air temperature are in a relatively warm environment, and the human body will adapt to this warm state at this time. However, when we blow dry our bodies with cold air, the ambient temperature will suddenly drop, and the human body has no time to adapt to this change, which leads to an increase in the sensitivity of the body to temperature, thus feeling colder.
4, physical fatigue and decreased immunity lead to colds.
Too long blowing time after bathing will lead to increased physical fatigue, decreased immunity and easy to cause diseases such as colds. In addition, after taking a bath, you should avoid blowing dry your hair or body with cold air, otherwise it will easily cause adverse reactions such as headache and muscle spasm.