Yesterday, Denver, CO was named "Most Desirable City To Live In" by a U.S. survey. First, Denver places 4th on the Nation's Fittest Cities list as reported by Men's Fitness (link). Then it ranks among the Coolest Cities list as seen by MSN (link), and now this (link). 2009 is shaping up to be a good one for the Mile High City. Perhaps, the reason for all this praise is that Denver clocks in over 300 sunny days a year on average, more annual days of sunshine than either San Diego or Miami Beach. So what? So, everything. Not only does the sun make Colorado's forests green and mountains sparkle, it also keeps the citizens healthy. Here's how