We’ve all heard how celery has so few calories that chewing it actually burns more calories than you take in. The jury is still out on that one – but experts say the effect does hold true for ice water! Scientists have now proven that when you drink water at 40 degrees or cooler, you actually burn calories digesting it! “That’s because your body has to raise the temperature of the water to 98.6°F, and in the process, it burns about one calorie per ounce of water,” explains Selene Yeager, author of The Doctors’ Book of Food Remedies. So if you gulp down eight glasses of icy water a day, you’ll burn about 430 extra calories a week!