One woman's idea of what's hot can be another's what's not. How can we measure a city's sexiness if beauty is so subjective? According to evolutionary psychologist David Buss, Ph.D., author of "The Evolution of Desire: Strategies of Human Mating," women look for a few key qualities in a mate. Along with the usual suspects -- love, mutual attraction and personality -- women also desire "intelligence, good health, emotional stability, ambition and industriousness, and good financial prospects," Buss says. We combed through reams of census data -- covering lifestyle factors like smoking and drinking, as well as surveys on health, weight, education and income -- to find out where the hotties live. Do you live in one of these sexy-guy cities?

L.A. might have a rep as a mecca for the vain and superficial, but the reality is, there's some substance to its citizens. They're healthier, more active and physically fit than most; fewer of them smoke or drink heavily, and a high rate of Angelenos land in the healthy weight category. Financial security isn't an issue, either: the men rank no. 3 in people who make more than $100,000 annually.

Sure, the men of SLC get high marks in avoiding cigarettes, alcohol and other vices that pack on pounds and damage skin, teeth and hair. But this Mormon hotbed also made Qualityhealth.com's list of sexually active cities. The percentage of men with a bachelor's or higher degree -- about 37 percent -- is also high.

Smoking can wreak all kinds of havoc on a man, from premature wrinkles to increasing the risk of balding -- not to mention what it does to his breath and the rest of his body. Too much fat and booze cause damage, too. Hotness runs high in Provo because they have the lowest rate of heavy drinkers (.6 percent) and smokers (4.9 percent) in the country, and more than 40 percent of the men hold a bachelor's, graduate or professional degree.

It's the most sexually active city in America, according to QualityHealth.com's survey, which isn't shocking because the men of Mile High City are one fine bunch. They make good money, they're in great health, and they partake in major vices -- smoking and drinking -- only in moderation.