coital

post-coital contraception.

交避孕。

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，头部和颈部肌肉通常会收缩，潮时血压会增。这些情况会导致大脑中血管扩张，在学术上这种情况被称为“交头痛”。