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Let the hot water cool before you drink it. Don't rely on your fingers to tell you if it's cool enough to drink. Take a small sip to test the water before gulping. Continue sipping your hot water until you're finished.
As with other hot drinks, you can't drink it right away.  It will take a few minutes for the water to be cool enough to drink. Since personal preference varies, wait until the water reaches your desired temperature. To speed up the cooling, you might blow on the water. However, this will cool just the top of the water, so sip slowly. Although you shouldn't touch hot fluids, you may be tempted to put your finger against the surface of the water to test the temperature. However, your finger can withstand higher temperatures than your mouth, so what feels warm to your hand might scald your mouth and throat. Wait until there isn't much steam coming off the water. Gently bring the water to your lips and take a small sip to see if it's ready to drink.  Treat your hot water the same way you would tea or coffee. If the water feels too warm as you bring it toward your lips, don't take a sip. It's better to take small sips than big gulps. Enjoy the warming sensation of your convenient, calorie-free beverage! If you'd like to spruce up your water, you might add a flavoring.