Read this article written by Dean Karnazes on how to cool your interior while training in this extreme July heat

I believe it is safe to say that most of us will not need these tips to run an ultra marathon, but we can definitely take away some of these tips for our runs on a smaller scale.  We are naturally inclined to cool our exterior but in this article Dean Karnazes (THE Ultra Marathon Man) gives some pointers to cool your interior that he has picked up along the way (...of his ultra through 100+ degree California canyons) 

http://www.runnersworld.com/runners-stories/how-to-cool-your-interior-system