Head and neck muscles often tighten during sexual activity, and blood pressure can increase at orgasm, causing blood vessels in the brain to dilate, a condition technically named coital cephalgia.
性活动中，头部和颈部的肌肉通常会收缩，而性高潮时
压会增高。这些情况会
脑中的管扩张，
上这种情况被称为“性交性头痛”。
