this post was submitted on 17 Jul 2023
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Nah. The body does not have to work "really hard" to warm it up. And if your body is already hot and trying to cool down by sweating then the cold water will help with that. You need 1 kcal to heat up a litre of water by a degree. So if you drink a litre of 6C water and your body temp is 36C then you will need a whopping 30kcal to heat it up. That's like 5g of peanuts, so like 7.