One of the most effective ways to cool is to wear something thin top and bottom, then wet it (just jump in the shower with your clothes on if necessary) evaporative cooling works much better, the more fluid there is. In Saudi, when people get heat stroke, they cover them with wet sheets, then use the fans, much more effective than just fans, or ice packs. Or when you go to sleep, strip off and sleep with a wet sheet over you, and just wet it again if it dries out during the night.