According to experts, the foot is the farthest branch of blood vessels, with thin fat layer and poor thermal insulation, and the skin temperature of the sole is the lowest part of the whole body. After exercise and shopping, people sweat a lot. At this time, suddenly washing feet with cold water will lead to the sudden closure and blockage of enlarged pores, coupled with muscle fatigue after exercise, increased tension, and cramps after cold stimulation.
If you do this often, it will not only make your feet catch cold, but also lead to perspiration dysfunction after a long time. Not only that, sudden stimulation will also make normal blood vessels contract violently, which may lead to vasodilation dysfunction, induce acroarterial spasm, and then lead to a series of diseases, such as erythematous limb pain, arthritis, rheumatism and so on.