When it comes to dating, mating and manhandling, any edge you can score is majorly beneficial.

One valuable coupling-up coup: the fact that you can rad any man's mind by just looking at him.

"Before developing speech, we communicated with our bodies," says David B. Givens, Ph.D, director for the center of nonverbal studies in Spokane, Washington. "We still subconciously use those instinctive responses to expres our feelings," so, if you can interpret a guys signals, it's like having a backstage pass to his psyche. Eureka! Read on to learn his most telling moves.... and how to respond with some undercover communication of your own.