it seem this bizarre misconception stems from a misguided belief that fat is comparable to blubber. this, of course, is ridiculous nonsense as humans cannot amass blubber. blubber is a dense layer of "fat like" inclinatory flesh that for the most part is exclusive to marine mammals like whales, seals, sea lions, ect. and is generally devoid of veins and all the little never endings and other bits that human skin has that register the sensations of touch and heat and cold or pours that allow us to regulate our body temperature by sweating. so in essence the fatter a human becomes the more surface is developed and kind of like the sail of a ship catches more wind the wider it is the more cold a fatter human body will experience similarly. that along with the increased distance from the human "core" (that being the warm center with all the pumping blood and lung action as well as digestion that cause a great deal of our warmer areas, A very necessary heat for us to function) that outer dermal layer becomes adds to the cold sensation being magnified with the further distance blood needs to be pumped. all this unnecessary dialog i realize I'm typing hopefully is accurate enough to over emphasize just how vastly different fat is to blubber. of course the increased effort required to move all added body fat will defiantly lead to rapid overheating in almost any temperature. much like the reason for increased cold sensation in warmer temperatures a fatter body will experience more heat and so more sweat as a result of the body attempting to regulate its temperature within necessary parameters to properly function. so bundle up if its cold and stay well airconditioned when its hot as your body grows kids! if you got this far then yes i am very aware how ridiculously long and unnecessary my comment is. its no mistake. kinda my thing.