Lust

Sex makes women happy, it's official

Having sex is the high point of most women's days, while commuting is the low point. And most women like being with their kids less than they admit...with 6 being the strongest and 0 the weakest women gave "intimate relations" a positive score of 5.10

Female orgasm is in the genes

A woman's ability to reach orgasm is partly due to her genes and the relative importance of environmental factors versus genes seems to vary depending on whether a woman masturbates, has sexual intercourse or oral sex.
The researchers found that when women try to reach orgasm through masturbation about half (51%) of their chance of success depended on their genes. When they had penetrative sex, genes accounted for just 31% of their chance of success, and 37% when a women and her partner used other methods.
...may support the theory that orgasm plays a role in evolution such as to retain sperm

Note: This study was done with 3000 Australian female twins including genetically identical twins and non-identical twins. Somewhere out there is a very, very happy research assistant (tick that one off as Envy).

Orgasms play tricks on your mind-brain

Orgasms activate parts of the brain responsible for euphoria and pleasure, but also emotion...orgasms are better if you're in love. ...we tend to have orgasms with the right side of our brain

Note: Does this make lefties better lovers?

"Drug companies should be including tests of orgasm function before marketing their drugs."

Now there's a Quality Assurance job that sounds fun!

Orgasms can be such a pain

For some people reaching orgasm can be a painful experience – if they are the one per cent of the population who suffer from sexual headaches.

Too much sex gives you arthritis Uh. I'm at a loss for words.

Sex is good for you

Sex is good for your immune system as well as your ego...people who report having sex once or twice a week have elevated levels of an immune protein found in saliva which is the first line of defence against colds and flu

Skip the flu shot! Stay in bed!

Why polygamous sex has its benefits

Three recent studies on sex reveal that polygamy holds biological benefits and dominated human history so much that it is imprinted in our genes.
...researchers discovered that while more men than women are squeezed out of the gene pool, Y chromosome variations indicate that those men whose genes survived tended to travel and to have multiple female partners.

Sex: do we really need it? Cool picture.