post-coital contraception.
性交避孕。
post-coital contraception.
性交避孕。
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.
在性活动中,头部和颈部肌肉通常会收缩,而性高潮时血压会增高。这些情况会导中血管扩张,在学术上这种情况被称为“性交性头痛”。
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