According to a new study, having more sex does not help in feeling more happy. The study was conducted by researchers at Carnegie Mellon University in Pittsburgh. It was conducted on 128 married, heterosexual couples, aged 35 to 65. The participants were told to increase the amount of sex to double or carry on with the same usual amount.

Researchers tried to find out happiness of the couples over three months through online questionnaires. The researchers told that the people who had double sex were not happier than those who had usual amount of sex.

In fact they found that those who increased the amount of sex were somewhat less happy than before. It was found by the researchers that apparently people who had more sex, their desire and enjoyment for sex was decreased, the main reason behind less happiness compared to before.

According to study authors, the desire and enjoyment of sex was same among those who had more sex, but as they were told to do it in place of doing it on their own they didn't feel more happy. Lead investigator George Loewenstein, a professor of economics and psychology, said in a university news release, "Perhaps couples changed the story they told themselves about why they were having sex, from an activity voluntarily engaged in to one that was part of a research study".

He said that if they conduct the study again, they will tell participants to do more sex in different ways with a sexy frame of mind such as with baby-sitting, hotel rooms or Egyptian sheets, in place of doing it directly.

The study has been published in the Journal of Economic Behaviour & Organisation.