Whether you're married or not, relationships - and the satisfaction tied to them - are extremely important for increasing men's and women's quality of life.

At first I assumed hate was the opposite of love. But it isn't. The opposite of love is indifference.

It certainly would have been adaptive for ancestral man to have a chubby wife during stressful times of famine. Not only would she have had more calories to burn, and thus more energy and endurance, but since fat stores estrogen, she would have remained fertile for longer.

For so many generations, a woman's only career path was to marry well and to marry up. Those days have changed.

A woman of 40 or 50 or 60 can take estrogen replacements, get facelifts, spend her money in bars.

Men couldn't care less if your strands are perfectly styled and neat. In fact, he might like you more with some wildness or bedhead, since it shows you're carefree and relaxed.

Experiences shape the brain, but the brain shapes the way we view experiences, too.