The hot sun does make me more anxious and edgy. I get extra sensitive to what i eat as well. Seems like the heat can promote a die-off much quicker. Ive noticed that the hot sun keeps my blood pressure much higher where as in the winter time i have trouble with low blood pressure. In the summer time i really have to watch my salt intake and animal fat. I think both are related to increasing blood pressure. I usually end up losing some weight in the summer because my appetite goes down. I end up eating more lowfat fish in the summer it seems to help take some of the edge off. Along with drinking more water of course.