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健康密码:性爱质量越高受孕几率越大(双语)

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性爱质量越高,受孕几率越大,”美国生殖生理学专家Joanna Ellington博士在《精子快跑》节目中说。

Forget books, special diets and particular times of the month. Couples who want a baby should put their energy into having the wild, uninhibited sex of their early days together.

The better their quality of love-making, the greater their chances of conception, scientists say. What one fertility expert calls "gourmet sex" - where both partners take time to ensure the other has a satisfying experience - gives a couple the best chance of producing a baby。

"Couples who are trying to have a baby often mention that the sex becomes a bit of a chore, a bit mechanical and routine. That's the wrong thing to be doing," said Dr Allan Pacey, a senior lecturer in andrology at Sheffield University。

"The sex should be as wild and thrilling as it was when they first met, when they weren't thinking about babies, to give them the maximum possible chance of having a baby," added Pacey, secretary of the British Fertility Society。

Men usually produce about 250 million sperm during intercourse. But those who are fully stimulated because they are enjoying "gourmet sex" will ejaculate up to 50% more than that, according to research revealed in a Channel 4 documentary tomorrow. An extra five minutes of sexual activity before ejaculation can produce an extra 25 million sperm, said Pacey. That, plus the fact the extra sperm released are of a higher standard, means there is a greater chance of the sperm and egg fusing to create a new life。

"The better the sex, the better the chances of conception," Dr Joanna Ellington, an American expert in reproductive physiology, says in the programme, The Great Sperm Race. "One of the things that men don't realise is that the more excited they are, the further back in the testicle they are going to draw on reserves [of sperm]. So if you have what I call 'gourmet sex', where you really spend time and you make it fun for both partners, that is going to make the man more stimulated and he is going to ejaculate more and healthier sperm."

The research tallies with previous studies showing men who have viewed pornography just before ejaculation also produce greater amounts of sperm。

For women, more orgasms equal not just more pleasure but also enhanced fertility. "When a woman experiences an orgasm, we think the intensity of the muscular contractions she has during the big pressure changes going on in her body helps to pull or suck up the sperm into her cervix and from there into the uterus," explained Pacey。

Research into female pigs underlines the beneficial effect. Danish researchers found that sows who are sexually stimulated by humans during artificial insemination had a 6% increase in fertility. "Having a farmer on the pig's back is low-tech and unsexy but it seems to work," said Pacey. The findings were so striking that Danish pig farmers are given a government-approved five-point plan showing them what to do。

The programme, a dramatisation of the epic journey sperm undertake in their quest to fertilise the egg, reveals other fertility secrets. Evolutionary psychologist Dr Geoffrey Miller and colleagues from the University of New Mexico studied the amount of money lap dancers earned at particular times of the month. He found that the women were asked to perform the largest number of dances, and therefore got the most money, during their most fertile days and so were most attractive to men then。

忘了那些指导书籍、特殊饮食和每个月的特定时段吧。想要孩子的夫妇们应该把精力花在享受尽兴的、毫无禁忌的鱼水之欢上,就像他们刚结婚之后那样。

科学家说,夫妻生活的质量越高,受孕的几率也就越大。被一位生殖专家称为“性爱饕餮”的做爱——夫妻双方都能在其中获得满足——最有机会使妇女受孕。

“想要孩子的夫妻经常抱怨说性爱已经成为了例行公事,机械而没有新鲜感。那就错了,”谢菲尔德大学的男科高级讲师Allan Pacey博士说。

“性爱应该像夫妻二人的初次那样,那个时候他们完全没有要孩子的想法,这样成功的几率才最大,”Pacey补充说。他还是英国生殖学学会的秘书长。

在性交中,男性通常产生2亿5000万个精子。但根据电视四台明天播出的纪录片报道的一项研究发现,那些在“性爱饕餮”中完全兴奋起来的男性射出的精液中精子数会比平常多50%。Pacey说,射精前额外五分钟的性活动可以使男性多排出2500万精子。更多的精子数,加上额外产生的精子更高的质量,就意味着精子更有可能和卵子相遇,从而创造出新的生命。

“性爱质量越高,受孕几率越大,”美国生殖生理学专家Joanna Ellington博士在《精子快跑》节目中说。“男人们不知道的一点是,他们越兴奋就越能充分调动睾丸中的(精子)储备。所以如果你能享受到我所说的 ‘性爱饕餮’,真正花时间让夫妻双方都感到快乐,男性就能更兴奋,从而射出更多更健康的精子。”

之前的研究证明,男性在看过色情电影之后射精可以产生更多精子,这次的研究结果和这一结论相符。

对于女性来说,更多的高潮并不止等同于更大的快感,同时也意味着更高的生殖能力。“我们认为,当女性获得高潮的时候,其体内压力巨大变化的过程中发生的肌肉剧烈收缩有助于把精子吸入子宫颈,进而使精子进入子宫,”Pacey解释说。

对于母猪的实验印证了性高潮对女性生殖力的有益影响。丹麦的研究者发现,在人工受精过程中,人为刺激母猪的性欲,可以增加6%的受孕几率。“找一个农民趴在母猪背上的做法没有什么技术含量又无聊,但似乎确实管用,”Pacey说。有了这一惊人的研究发现,现在丹麦的农民都得到了政府许可的“促孕五点计划”,其中向农民解释了他们应该怎么做。

这部纪录片戏剧化地讲述了精子使卵子受孕的伟大征程,同时还揭示了其他生殖秘密。来自新墨西哥大学的进化心理学家Geoffrey Miller博士和他的同事们研究了脱衣舞女在每月特定时候的收入。他发现她们受客人要求表演最多的时候,也就是收入最高的时候,正是她们生育能力最强的时候,也就是她们对男性最有性吸引力的时候。

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