Why should we drink warm drinks in the summer and not cold ones to cool off? It's sweltering hot outside (after all, it's summer!), which means we'll most likely be treating ourselves to an ice-cold drink. We've got a hot tip for you to take into account the next time it's a hot dog day, so you can breathe easier. Do not resort to chilled drinks, but rather reach for warm or hot drinks. Why? Find out below.