According to doctor Robert Friedman, at Wayne State University School of Medicine, a hot flash is quote a rapid and exaggerated heat dissipation response. These are also another indicator of cardiovascular health. People who have more intense, persistent hot flashes may have more risk for cardiovascular disease. Ice water absolutely will work, especially if you're like in a situation, right? Like let's say you're at work or you're giving a talk because it's always going to be when you're doing something like that. If you don't know where to turn, it can be so isolating and so scary.