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每次床战大概消耗多少卡路里的热量?一天当中的哪个时刻最渴望性?性高潮是否可遇不可求?什么才是美满的性生活?性研究的种种新发现,让我们一起关注
How much calories do you burn each bed war? Which moment of the day is the most craving? Orgasm is good? What is good sex?