Drink up! When it comes to drinking, the colder, the better. According to this study, drinking eight pints of ice water a day will cause your body to expend almost 125 calories of metabolic heat to warm that water to body temperature (by the way, that's a full gallon of water!)
On the opposite spectrum, drinking can actually add calories if you're imbibing the wrong drinks. In other words, don't just drink a frozen margarita because you believe it burns more calories because your body has to warm it up.
