A few years ago we took a summer vacation to Arizona ...... in July. We live in muggy humid northern Virginia where it was about 90, we had a lot of concern about going to AZ where it was 110 and zero humidity. It was easier for Kim to walk there?!?!?!? Not that it was like she could run or stuff, but she did a lot more walking in AZ, more distance per day than she could at home. Made me wonder.

Russell Johnson, a meteorologist with MS who made the connection between dew point temperature and MS symptoms some time ago has written a number of papers on the subject. Unfortunately you can't get at the papers for free on the internet. But, in a nutshell, he lays out a framework that shows that humidity is the oft overlooked variable, it's not just about heat. Ken