If you want to qualify for the Boston Marathon and you’re not above manipulating your own biochemistry to do so, there’s a fine chance you’ve been squirreling yourself away in the mountains of … anywhere that actually has mountains, i.e., not South Florida. Anyway, once a year, around now, with plenty of recovery time before running Boston in April, you descend from Denver or Santa Fe or Casper or La Paz and, with ears a-poppin’, trudge down to sea level. Your life at altitude has built your red blood cells’ mass and quantity, multiplying the oxygen your body can process and making a double-lungful of this thick, briny Florida air feel like a reverse cigarette. And you can run the 3 hour, 15 minute marathon you need to qualify for Boston with as much effort as you normally expend schlepping your groceries... More >>>