still which means your ability to cool off just being outside are rather limited, and this is going to keep on rolling through in this particular portion of the country until at least friday morning. so the conditions here have gone from not only annoying, but on to oppressive and now to dangerous. >> as the body temperature starts going up, that's when we start having symptoms that are really of concern. so if we start sweating excessively, if we start breathing fast or if our pulse starts going higher, if we start having nausea or vomiting or if we fate faint, those are really bad signs that something more serious is happening. >> reporter: now, certainly, folks who are elderly are at risk in such extreme weather conditions like we're having in most of the country right now and certainly the middle sec, but younger folks as well largely because the area, the surface area of their skin versus their body mass is so much smaller that the heat effects them much more often,