We all know too well how San Antonio’s portly bellies have made us the fattest city in the nation on more than one list at one time or another.

But, finally, we’ve gone from fat to fit and have landed on a list of the 25 fittest cities in the country (we’re last, but hey, we’ll take it), shedding our flabby reputation, according to the forthcoming March issue of Men’s Fitness magazine.

In the publication’s “Fittest & Fattest Cities in America” survey, another Texas city tops the tubby list: Houston. H-town is the most obese city in the nation with El Paso on the list at 7 and Dallas at 25. On the flip side of fat are the fittest cities with S.A. making the cut at 25; Austin came in at 12. In first place is Portland.

The magazine reports that 33.8% of American adults are now obese. “It’s been three years since we last rounded up America’s fittest and fattest cities, and obesity rates have worsened in that time span at an alarming rate,” writes the article’s author Nate Millado.

Of Houston’s standing, comes this: “According to the CDC [Centers for Disease Control], a whopping 34% of H-Town residents are overweight. In previous surveys we’d claimed Houston was on the upswing in the weight-loss department, but there’s evidently been a bit of a regression since we last checked in.”

The magazine blames Houston’s weight gain on the city’s scorching heat and the average commute of almost 28 minutes in a car to get from one place to another, keeping Houstonians seated and sedentary.

Houston also is cited as the city with the most fast-food joints: 1,034 that may be to blame for the city’s, well, expansion.

But not all is fit as a fiddle for S.A. The magazine reports that the nation’s heaviest drinkers live in San Antonio and that 8.2% of us have at least two drinks per day.

From fat to fit . . . looks like we’ll drink to that.

Here are the fattest cities, in order: Houston, Detroit, Cleveland, Memphis, Tampa, Las Vegas, El Paso, Baltimore, Los Angeles, Louisville, Tulsa, Miami, Indianapolis, Philadelphia, Arlington, Columbus, Charlotte, Phoenix, New Orleans, Atlanta, Raleigh, Kansas City, St. Louis, Chicago, Dallas.

Here are the fittest cities, in order: Portland, San Francisco, Albuquerque, Oakland, Boston, Seattle, Denver, San Diego, Minneapolis, Honolulu, Tucson, Austin, Colorado Springs, San Jose, Omaha, Washington, Milwaukee, Virginia Beach, Sacramento, Jacksonville, New York, Wichita, Oklahoma City, Nashville, San Antonio.

UPDATE: Let’s chew the fat: Houston isn’t taking this well. A check at the Houston Chronicle’s website, Chron.com, has Houstonians reacting in disbelief and others with humor, such as:

“Houston…you’re so fat, you put mayonaisse on aspirin. Houston…you’re so fat, you leave footprints in concrete. Houston, you’re so fat, you had to get baptized at Sea World. Houston, you’re so fat, you see a zip code on the scale. Houston, you’re so fat, you show up on radar.”