An impressive amount of research has linked frequency of sex with greater happiness. One study even put a monetary estimate on it. They said that the happiness spurt from having sex once a week compared with monthly is similar to the boost you’d get from earning an extra $50,000 a year (though for anything more frequent than weekly sex, the benefits seemed to tail off).
Asking if and why more sex makes us happier may sound like asking the blindingly obvious, but of course a lot of pleasurable activities don’t have long-term emotional benefits; it’s also tricky to rule out the simple alternative possibility that we’re more likely to have sex if we’re happy.
In a series of studies in Personality and Social Psychology Bulletin, psychologists in Switzerland and Canada have looked beyond the immediate bliss that sex can bring, and they say that the main reason that more sex seems to contribute to greater long-term happiness is because of all the cuddling (and other expressions of affection) that’s involved, both at the time, and for hours afterwards.
In Talking It Over, Julian Barnes writes that “Love is just a system for getting someone to call you darling after sex”; this new research suggests that sex is a system for getting someone you love to call you darling, and to give you a big cuddle.
Julian Barnes在谈及此事时写到：“爱仅仅是一种在做完爱之后让别人称呼你为‘亲爱的’的一个系统”；这一新的研究表明，性是一个让你爱的人叫你亲爱的， 并给你一个伟大的相的系统。
Anik Debrot at the University of Fribourg and her colleagues conducted two surveys, the first involving 335 participants, recruited on Amazon’s Mechanical Turk site, who were in a romantic relationship, and the second involving both partners in 74 couples recruited in the San Francisco Bay Area in California. The vast majority of participants were heterosexual. They answered questions about how often they had sex, about how much affectionate touch went on in their relationship (e.g. cuddling, hugging, kissing and caressing) and rated their life satisfaction or how much they typically experienced positive emotions like joy and contentment.
福里堡大学的Anik Debrot和她的同事进行了两次调查，第一次实验的335名参与者在亚马逊土耳其机器人网站中招募，他们都处在个浪漫的关系之中，第二 次实验包括的74对伴侣，招募自加利福尼亚旧金山湾区。绝大多数参与者是异性恋者。他们回答的问题包括，他们做爱的频率，在他们的关系中深情抚摸的程度（如依偎相拥、拥抱、亲吻、爱抚） 以及对他们的生活满意度的评价，还有就是，他们通常体验到的，诸如喜悦和满足的积极情绪的多少。
Having more sex was correlated with greater life satisfaction and experiencing more positive emotions, consistent with past research. But when the researchers factored amount of affection into the equation, the sex–happiness link all but disappeared (with one exception – to the researchers’ surprise they found this wasn’t true for women in the second survey). The overall implication of the surveys was that more sex leads to more happiness because it promotes affection.