Sleeping with your head against the window, especially when the day is cool, there is wind and open windows is certainly not good, so easy to get cold, cold, fever, dizziness, headache. Moreover, facial nerve paralysis can easily occur when the wind is blowing on the head, and the facial expression muscles on the side of the lesion can become paralyzed, manifesting as frontal lines on the side of the lesion, shallow nasolabial folds, inability to frown, inability to close the eyelids, cheek puffing, air leakage when whistling, and inability to show teeth, and in severe cases, abnormal taste and auditory allergy can occur. So in order to avoid the occurrence of cold, flu, fever, facial nerve palsy, cardiovascular disease, try not to sleep with your head to the window.