使用體位C時，男人的背部弓著，對喜歡陰道前壁和G點受到刺激、但又覺得後進體位不舒服的女人，是一大福音。但背部有問題的男人不宜採用這體位，而腹部緊實者用這體位可以展現自己的肌肉。
③前戏刺激：先从亲吻开始，慢慢过渡到隔着衣服抚摸、自然脱掉衣物，然后从脸颊到脖颈，再到乳房、腰侧、大腿根部轻慢爱抚按揉，最后到阴蒂、阴道，用手指逐渐且充分抚摸女方，扩张阴道，直至女方阴道湿滑，性唤起兴奋，便可以进行下一步插入了。
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性愛時，你總是遵循幾個性愛姿勢在輪替嗎？在性愛歡愉時，有時候你喜歡站著的性愛姿勢；有時候你喜歡躺著、把自己交給另一半；有時候你喜歡兩人交纏在一起，越深越好。又有些時候，你喜歡掌控大局的感覺，那麼就絕對不能錯過：女上的這種性愛姿勢。
採取這體位時，女人背部朝下躺著，男人躺在女人上面或者稍微偏側邊。男人喜歡這體位，因為可以根據接近高潮的程度來控制進入的深度和抽插的速度。女人喜歡這體位，是因為跟其他體位比較起來，能有更多的身體接觸。其他的體位或許更讓人血脈賁張，但這種體位是最浪漫的一種。採取這體位可以方便親吻和擁抱，很多女人也有受到保護的安全感。
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男方如果性知识缺乏，便可能出现不清楚阴道的位置、在没有足够前戏且女方阴道干涩的情况下就插入、选择了让女方不适的性交体位等情况，均会导致性交失败。甚至如果长期性交不畅，还会产生行为焦虑而出现勃起障碍。
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我把下面的體位變化稱為「好過性愛」，適合喜歡運動的人。這體位能保持身體間的全面接觸，也增加骨盆的壓力和張力，也讓男人以腳作為支點，可以更緊密地抽插。以下是詳細解釋：