Drinking a glass of ice water rather than a glass of water at room temperature only burns about eight calories. Your basal metabolic rate, which keeps your organs functioning, burns about 70% of your calories. Physical activity adds about 20% and digestion about 10%.⁠ ⁠ The idea that drinking cold water must burn more calories developed from the belief that our bodies expend energy to warm up. Your body will indeed work to raise its temperature to 98.6 degrees Fahrenheit, but it will only expend about eight calories to do this. Eight calories are the equivalent of a small pickle.⁠ ⁠ ⁠ ⁠ #coldwater #calories #icewater #water #burningcalories #science #biology