Louann Brizendine - The Male BrainDespite what your girlfriend says, there's no way to avoid staring at other women.

Harvard Medical School board member and Yale grad Dr. Louann Brizendine has a new book out called "The Male Brain," and it's a frightening exposé of our every whim, sexual urge and stubborn refusal to admit that NASCAR is pointless. It also proves the power of cleavage.

"Most women aren't fond of being mentally undressed by men they're not already intimate with," Brizendine reminds us with a sigh. She suggests that, instead of just giving up and staring bug-eyed, we exert major energy to lock into her gaze.

However, she says, "When the male brain likes what it sees, the man's pupils dilate, his heart rate accelerates and he gets that glazed look in his eyes that I call the 'man trance.'" It's damn-near impossible, she says, to break that trance.

Keep reading to find out what other bad habits we can blame on our brains.

In other circumstances, getting lost in these trances may cause us to become the cheating bastards Ricki Lake warned us about. And it would be only natural if we did, according to the good doctor's research, since men possess a "2.5-times-larger brain area for sexual pursuit and a 10-to-15-times-higher testosterone level."

But Dr. Brizendine does not give us a "Get out of Relationship Jail Free" card:

"Biology is not destiny, and people are expected to behave and show restraint in a civilized society," she warns us.

There is hope, though, for the male brain, wired as it is to procreate with as many females as possible. Dr. Brizendine, for one, thinks our gender is A-OK.

"The brain is very malleable and has an amazing capacity to learn new behaviors and unlearn others," she tells us. "Understanding your brain's innate tendencies will allow you to decide where you want to do some upgrades, without being self-deprecating in the process."

By the way, "The Male Brain" is a down-to-earth look at how our brains differ from female ones, a subject first explored in Brizendine's smash, "The Female Brain," which was roughly 10 times bigger and more complicated than its male counterpart. We kid!