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男人如果忍精不射
一般人在性生活中都希望得到射精时的快感，但有的人出于某种原因（比如害怕怀孕，认为精液是人体精华等），在性交将达到高潮时就强忍不射，甚至在性高潮前用手捏住阴茎使精液不能射出。这种强忍不射的做法是有害无益的，其理由有四个：
一.会使男女双方都得不到性的满足：射精是一种正常生理过程，不仅可产生性快感，得到性满足，使男女双方性生活和谐，而且可使家庭生活美满，充满乐趣。强忍不射必将失去这种生活乐趣，使双方都得不到满足。
二.是忍精不射容易发生性功能紊乱：性反应过程是一种自然过程，人为地加以干扰或控制会使性功能发生紊乱，忍精是通过大脑克制的，这种克制可产生抑制作用，容易发生性功能障碍。有些人患有“不射精症”，就是因为“强忍”引起的。
三.会逆行射精造成不育：性高潮时输精管、精囊、前列腺和尿道肌肉发生节律收缩，射精必须发生，要克制也无济于事。如果强行用手捏住使精液不能排出，精液往往会被迫向后方冲破膀胱内口进入膀胱，形成“逆行射精”。长期如此可形成条件反射，使逆行射精经常发生，造成不育。
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