Yes, thank you, we have been dieting

If you haven't already made lunch plans, why not go ahead and have that triple cheeseburger, large order of fries and milkshake? And why not wash it down with a giant dessert? A celebration is in order, you see: Houston has slipped to No. 6 in the Men's Fitness annual ranking of America's fattest cities. Looks like Mayor White's Jazzercise really paid off.

In this year's MF rankings, Las Vegas takes the coveted title of fattest city in the United States, followed by San Antonio; Miami; Mesa, Ariz.; Los Angeles; Houston; Dallas; El Paso; Detroit; and San Jose, Calif. The magazine ranked Houston the nation's fifth-fattest city last year (you'll remember that we were No. 1 not all that long ago), so we guess dropping a position is a good thing. Meanwhile, our friends in San Antonio are probably stress eating after finding out their city jumped a whopping 10 positions, from No. 12 to No. 2, in this year's list. Dallas fell from fourth to seventh this year, but we all know how they accomplished that.

To compile the listing, Men's Fitness relies on several factors, including how much people in cities use their gym memberships, how many fast food restaurants are nearby, how much time they spend sitting in traffic — in short, it's a highly complex set of data that tells you most everything but how fat people actually are. (To its credit, the magazine also factors in local fitness programs and efforts by city leaders to get citizens fit, which we imagine really do make a difference.)

On the fit side, Milwaukee was named the most athletic city, while Oakland, Calif., was ranked as the city with the best eating habits. The fittest city overall is Albuquerque, N.M. Find the list of the 10 fattest and fittest cities here.