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Whenever you train, the working muscles in your physique create heat, which is transported around the body by your blood. As your body temperature increases, the blood vessels close to the pores and skin open up and the sweat glands work harder. The body is cooled by the evaporation of sweat from the skin and the transfer of heat from the blood to the air. When the air is humid (already saturated with water), it limits the amount of sweat that may evaporate; as an alternative, sweat just rolls off of your skin. When the air is scorching, it does not cool the blood near the surface of your skin. These conditions put you vulnerable to becoming overheated and dehydrated. Fluid is lost out of your blood if you sweat heavily while exercising in scorching humid weather. When there's much less fluid within the blood, your heart has to work more durable to deliver blood and oxygen to exercising muscles. Dehydration happens when the body does not have enough fluid. Dehydration can happen in phases, with every part changing into extra critical. There are 3 stages of dehydration. Heat cramps might occur while you first begin to become dehydrated. Cramps in the calves and/or abdomen as a consequence of a lack of sodium from muscle cells. Heat exhaustion can occur if you end up exposed to excessive temperatures and you do not replace fluids. Fatigue and weakness resulting in dizziness. Heat stroke is a medical emergency. Heat stroke happens when the body’s temperature has risen to 39°C or greater.
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發表於 2025-9-1 09:24:54