why we feel relax by air of fan? i want a biological answer..
We feel relax by the air of a fan, because with airflowevaporation of water from the body is increased, resulting in the concentrationof K + and Na + in the cell remains unchanged and outside the cell concentration increases, so the potential difference grows on the membrane and rises the threshold of activation. As the relaxation - it is the decrease of muscle tone, so not all nerve impulses that come to the muscles, can overcome the threshold of activation, which leads to a reduction of a muscle tone - relaxation.
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