Women are very attracted to a low voice because it's linked to testosterone, which for millions of years was a sign that men had very good spacial skills and would have been very good at hunting and finding their way back home.

When you fight, anger drives up testosterone in both men and women.

Men tend to be hierarchical, but women are driven to make lateral connections so they can cooperate.

You've got to remember that men are men and women are women. And although a lot of similarities, there are some real differences.

Women are better at reading body language everywhere in the world. As a matter of fact, it's associated with the female hormone estrogen. Women are better at figuring out of tone of voice, reading your face and posture and gesture.

Real competition can drive up testosterone, which boosts libido.