Sleeping at night is normal.

about sleeping at night will show hair loss, first of all, it is best to observe the number of hair loss per day. Generally speaking, the normal number of hair loss, within 70 to 100 roots are normal. Because our hair will be divided into growth time, rest period and regression period, so every day there will be hair loss, there will be new hair growth, do not worry too much. Of course, if more than 100 hair loss, accompanied by scalp loosening, for example, it is easy to pull out several hairs, then this may be a pathological hair loss, need to go to the hospital to see.