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40岁是中年,其介乎于青年与老年阶段之间。此时,体型发胖,腰部增大明显,身体开始臃肿,头发开始变灰白,眼睛老化,脸、手、颈皮肤变得粗糙并出现皱纹。同时,男子睾丸酮的分泌出现较明显的递减,性功能开始衰退,性能力可能会感到力不从心。但此时男性已不再将狭义的性生活即性交视为最重要,而是希望获得广义的性生活,即能实现性欲望,获得性快感的所有行为。尤其是对肩负重任工作繁忙的男人来说更有这种需求。 女性的性激素分泌在30岁时达到高峰,此后开始援慢下降,但对大多数女性来说,雌激素分泌量的减少并不影响性欲。许多人甚至到了28—30岁时,心理和生理上
The 40-year-old is middle-aged, ranging from young to old. At this time, body fat, waist increased significantly, the body began to bloated, the hair began to gray, eyes, face, hands, neck skin becomes rough and wrinkles. At the same time, men’s testosterone secretion decreased significantly, sexual function began to decline, sexual ability may feel powerless. However, at this moment, men no longer regard the narrow sexual life as the most important thing, but rather they expect to acquire the generalized sexual life, that is, all the behaviors that can achieve sexual desire and gain sexual pleasure. This is especially true for men who are heavily employed. Female sex hormone secretion peaked at the age of 30, then began to aid slow down, but for most women, decreased estrogen secretion does not affect the sexual desire. Many people are psychologically and physically even 28-30 years old