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.

在活动中，头部和颈部的肌肉通常收，潮血压。这些情况导致大脑中的血管扩张，在学术上这种情况被称为“<span class="key">交头痛”。