Who doesn’t love arbitrary rankings? Cooking Light, in celebration of recycling the same healthy recipes for the past 20 years, recently aggregated a bunch of statistics to create a list of the healthiest cities in America. The District finished a respectable third overall, falling just behind the granola-totin’ cities of Seattle and Portland, OR. At least we’re the champs east of the Mississippi! The criteria are dispersed among various categories and focus on the quality…