Some people have the habit of having shower before go to bed, then sleep with the wet hair. Then after getting up the next day, they will feel tired and headache and catch a cold and have a runny nose.

That is because yang qi of body is weakest in midnight. So it is the weakest time of immunity. Wash hair before going to sleep will leave some water in scalp which make yang qi coagulate with the cold water. If you often do like that, you will got qi-stagnancy and blood stasis, and your meridian will be blocked. It is easy to get ill if you sleep after washing your hair with cold and wet. Then you will feel numb of your scalp during night, and the next morning the numb Read more…