Anybody know about the weight loss benefits of ice baths? Read some stuff that shows you burn 4000 more calories swimming for 4 hours than you would running a marathon. The difference being the cold water. Apparently 20 lbs of ice in the tub for 20 minutes 3 times a week will help a ton with weight loss. Gonna put it to the test. I have about 25 lbs I could lose, and I want to get rid of 15-20 of it. I'm going to put it to the test. No special diet...just gym and ice.