If you’ve ever woken up in the middle of the night drenched in sweat or felt that familiar wave of heat sneak up during the day, you know how real (and unpredictable!) hot flashes can be. Over the past few years, I’ve tested several cooling products and these four have truly made a difference in helping to calm down a hot flash. The last one might be quite a surprise. I happened upon it accidentally. 1. The Large Tower Fan — For Hot Flashes at Night Let’s start with the big one. A quiet, high-powered tower fan has become my nighttime hero. I keep it at the foot of my…