;
茎
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
肌肉
收缩，而性高潮时血压增高。这些情况导致大脑中血管扩张，学术上这种情况被称为“性交性头痛”。
