If you think your sex life isn’t what it used to be, you’re not alone. Americans earn less today than they used to, and a new study suggests marriage may be part of the problem.

Married people typically had sex 73 times a year in 1990, the researchers report in the archives of sexual behavior. But by 2014, married couples had sex 55 times a year, lagging singles who did 59 times a year.

Some of this is due to age – people are getting married later now, but even when we take age into account, the sexual frequency of marriage is less dominant than it used to be.”

Generally speaking, compared with those who are married or living together or have children, no one has more sex on average than no one, and people have less sex today.

Desire and appetite are diminishing

For unmarried people, the frequency of sex increased from 1989 to 2002, possibly because of deregulation of premarital relationships, Twenge added by email. But around 2008, their sex life began to decline, and married and unmarried people began to decline.

That may be because smartphones debuted in 2007, Netflix streaming video in 2007 and YouTube in 2006, Twenge said.

Our entertainment is more entertaining and more popular than ever. There are a lot of things to do at 10 p.m. At home more than ever.

To study changes in the nation’s communication habits, the researchers looked at the survey data.

Among other things, participants answered questions about how often they had sex in the past 12 months and demographic data such as education levels and marital status.

Research has also failed to prove that more gender needs to make people happier

In 2002, the average American adult had sex about 64 times a year, but by 2014 that number had fallen to 53. Those with college degrees, southerners and those who are married or divorced saw the biggest declines.

Obviously, couples generally happier than single people, especially for middle-aged people, for many reasons, including interpersonal conspiracy and sex, so as long as about their sexual behavior, quality, far more than the number is important.

“As the gap between rich and poor widens and the middle class disappears, more people have to spend more time working, sometimes two or three jobs, just to make ends meet. This doesn’t leave much time or energy for sex! ”

Around the world, fewer people are getting married and having children, and fewer sex lives, says David, author of the myth of sexual addiction.

The trend is not unique to leyi, who was not involved in the study, according to an email. Do they have reason to worry? Who knows?

Though there is sufficient evidence that many species of male and female can communicate through chemical signals called pheromones, but if people also can communicate with each other in this way, there are still some problems.

Pheromones are chemical messengers (through sweat and urine, for example) transmitted from the air released by the body and have physical or emotional effects on another member of the same species.

Most animals smell or perceive pheromones through specialized half-moon structures inside the nose called the nose plough. The pheromones picked up by the organs are then sent through the nerves to a region of the brain called the hypothalamus, because it can change mood, hormones, reproduction and sexual behavior.

Common, non-pheromone smells, such as the smell of food or flowers, are called olfactory epithelium by different parts of the nose.

Dr Martha McKlintock in 1998 found female pheromones signaling between the strongest evidence, they found the woman’s menstrual cycle life together often because of sweat release of chemical information and synchronization.

The new study appears in this week’s journal “neurons”, he USES a PET (positron emission tomography) scanning technology for the analysis of 24 male and female brains, and smell is almost the same as the natural produce of the sex hormones estrogen and testosterone of chemicals.

In the production of synthetic pheromone chemical signals domain experts and Pherin Pharmaceuticals chief executive David Berliner, says Dr These findings confirmed that human pheromones do exist, men and women can communicate chemical, and vice versa. This is a very important finding because it shows specific areas of the brain activated by these chemicals.

They also found that male and female brains respond very differently to hormones. The female hypothalamus is activated when it smells chemicals similar to testosterone, but does not activate estrogen-like substances, whereas the male hypothalamus does the opposite:

They are activated only by estrogen-like chemicals rather than testosterone. There are also gender differences between specific subregions of the activated hypothalamus.

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