A lot of people who love clean have the habits that wash their hair before going to bed, if there is sufficient time to allow the hair to dry out and went to bed, that is certainly the best. But sometimes it is too late, finished first and then tired eyelids heavy to not open, so the hair is dry fell asleep. Weifang health experts have warned: the hair is dry and sleep, and great harm to health! Body in the metabolic process always generate heat to maintain body temperature, heat conduction after the blood circulation to the body surface by radiation, conduction, convection and evaporation to the outside world diverge. For the people whose body resistance is strong, normal temperature control mechanism by regulating the two processes of heat production and heat balance, when the temperature tendency to decline, the increase in heat production, heat dissipation to reduce the body temperature remained at around 37 ℃. Weak body resistance, automatically adjust the temperature to enable the body to maintain normal body temperature, the less easy to cold, so when the whole body or a local exposure to cold. We use hot water to wash hair hind, because warm effect, make scalp blood capillary dilate, the body around the quantity of heat of radiation to increase, and because the hair after shampoo is wet, there is a lot of water evaporation out, so also can take away a lot of heat. Due to increased heat, make the body freeze, and to make the upper respiratory tract reflective vasomotor, local blood flow to reduce, lowering the upper respiratory tract, and he has long existed virus or local bacteria break, grow, cause the upper respiratory tract infection, appear cold symptoms, such as runny nose, stuffy nose, headache and even a fever, etc. Generally speaking, before sleeping, had better not wash hair. We should pay more attention to our health and exercise more, some of you would like to go shopping, such as go to discount hermes handbags store where also selling hermes scarf to buy their favorite: birkin handbag and hermes kelly handbags, this is also a way to exercise, maybe.