There's been a lot of buzz lately about how coffee can perk up your sex life. Well, as Maxwell Smart (Don Adams/Steve Carell) says in the TV show and movie "Get Smart," you "missed it by that much."

Researchers from the University of Texas Health Science Center at Houston found that men who consumed between 170 and 375 mg of caffeine a day (that's two to three cups of coffee, or four to eight 12-ounce caffeinated waters) were about 42 percent less likely to report erectile dysfunction than those who consumed none.

And "caffeine" is the operative word here. True, coffee is the number one source of caffeine in the North American diet, but the study also counted caffeine from tea, sodas, and sports drinks.

But they missed chocolate; one and a half ounces of 80 percent cacao dark chocolate has a third to half the caffeine of a cup of coffee.

And the association between caffeine and avoiding ED held up for men who were overweight, obese or who had high blood pressure (frequent triggers for ED).

So, guys, if you want to reduce your odds for ED, enjoy your morning (and afternoon) coffee — a lot of additional benefits will come your way.

Studies show that drinking coffee also decreases your risk for nine cancers, Alzheimer's disease, Parkinson's disease, age-related memory decline and Type 2 diabetes.

And check out other sources of natural caffeine: one cup of black tea has 14 to 70 mg of caffeine; one cup of green tea, 24 to 45 mg; one cup of iced tea, 11 to 47 mg; caffeinated water has 45-100 mg.

Now that's getting smart!