 It's best to drink hot water to help induce sweating. Of course, that depends on the individual constitution. But for those who typically sweat a lot, drinking hot water will not make a whole lot of difference. So it's best that they drink water at room temperature. Nevertheless, he says, they should avoid drinking ice water at all costs. And for those who habitually drink ice water, it's advisable to let beverages from the refrigerator sit at room temperature for at least an hour.