The issue of child abuse. Remember the physics. With a rough approach, the amount of heat produced in the body is proportional to the volume.

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This is true, if the children melt the oven - then yes, after full combustion, the amount of heat produced is roughly proportional to the volume. If we are talking about the normal functioning of a living organism, the amount of heat produced is determined by the intensity of the chemical processes occurring in it. That, in turn, is determined by what happens to the body and how its thermoregulation system reacts. The relationship of one and the other to the volume - softly speaking, ambiguous. Therefore, in the winter it is not difficult to find a child, after a dozen jumps through sweaty in what he was wrapped in a caring and smart grandmother.