The next time your girlfriend calls you a caveman, take it as a compliment regarding your highly evolved eating habits, not a comment on your ability to make obnoxious commercials.

"70 percent of the calories we eat today come from refined sugars, flour and vegetable oils," says Dr. Loren Cordain, author of "The Paleo Diet," a tome of nutritional philosophies affectionately referred to as "The Caveman Diet" by skinny-jeans-wearing devotees. "We're hard-wired as primates to find something that's sweet. We've taken that sweet and put it together with fat and we call it a donut," he says.

The Paleo Diet has been steadily adopted by the urban desk jockeys who get in touch with their inner Neanderthal by fasting for a day here and there and chasing grueling workouts with brontosaurus-size quantities of meat. Dr. Cordain says that mimicking the hunter-gatherer version of "Survivor" really isn't the point of his book, and emphasizes, "Never did we say fasting was a part of [the diet]."

"The bottom line is [the diet] is not complicated. Eat the food that you are adapted to in your genetic niche, and you'll be OK," he says.

So what does it take to go Captain Caveman? (Hint: it's definitely not hoarding copious amounts of mastodon meat in a separate cold storage unit in Queens.) Do some hunting and gathering in the outside aisles of your grocery store and stock up on protein rich in Omega-3 fatty acids like salmon, and lean meats and fresh fruits and vegetables.

You can skip the dairy and grains section of the outside aisles. They are a no-go in the Paleo Diet philosophy. "Humans never ate dairy products. Can you imagine trying to milk a wild animal? That only occurred about 10,000 years ago," he says. And grains? Forget it. As by-products of the Agricultural Revolution, Cordain says we aren't genetically adapted to eat them.

Lastly, get sunlight. Homo sapiens are meant to be outside, not cooped up in dimly lit offices hunched over computers choking down a bag of microwave popcorn for lunch.

And lads, with Valentine's Day right around the corner, take a tip from Dr. Cordain: Cavemen do it better. The Paleo Diet is as great for upping your sperm count as it is for getting high ratings in the boudoir for stamina.

Paleolithic Man didn't have access to the scads of research our big-brained selves have today about nutrition, but the arguments for the Paleo Diet are simple for Cordain: "How much logic does it take to say you shouldn't be eating Hershey Bars?"