How does perspiration or sweating help keeping our body cool in hot days
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Perspiration is a phenomenon,when we sweat the sweat evaporates taking the latent heat of vaporisation from our body.This phenomenon of taking heat from body surface is called perspiration.Also it happens when we rub alcohol in our skin we feel cool this happens in the same way,alcohol also takes away the latent heat from our body,thus we feel cold.
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