[trailhkr1]

It was thought that if you slept in an artificially cool room, over time you could change some of your white fat to brown, which actually burns calories

I drink 1.5 gallons of ice cold water per day approx. Numerous studies show that if you drink very cold water versus warmer water you burn more calories over time...can't remember the reason maybe lowering core body temp for a short time and the body reacts??

[Ancesthntr]

I drink 1.5 gallons of ice cold water per day approx. Numerous studies show that if you drink very cold water versus warmer water you burn more calories over time...can't remember the reason maybe lowering core body temp for a short time and the body reacts??

Uh, no, its a lot more simple than that, and can be illustrated with a question: has your urine ever been cold? I'm betting that the answer is "no" and that's because the body brings all food and drink you consume to body temperature. 1 1/2 gallons of very cold water would have to be heated up from maybe 40 degrees to 98.6 - and that takes a lot of energy. THAT is why you burn more calories over time.