Heat

So heat was a big factor in running. Hauling my @ss out of bed at 5am, I was able to cut over half a minute from my 5K time. I was also rewarded with herons, ducklings and no baby strollers, four-abreast walkers, garotes (leashes), etc. No wonder these summer running events happen at the crack of dawn. And it hasn't even gotten hot enough to put in the air conditioner yet!