The most likely reason for getting up after a nap is peripheral facial palsy, which is mainly caused by viral infection or cold. It is recommended not to blow a fan or air conditioner against your head while sleeping, as this can easily trigger facial palsy. In addition, do not sleep on the floor, the cold can also lead to facial palsy. If you have peripheral facial palsy, you must go to the neurology department of the hospital. Generally, you can take oral hormones and B vitamins to treat it, and you can also use nerve-nourishing drugs, such as rat nerve growth factor. In terms of life, we should pay attention to eating more fresh vegetables and fruits and avoid staying up late to promote the recovery of peripheral facial nerve inflammation.