When your physique has to work extraordinarily exhausting to chill you down, you may develop warmth exhaustion. Throughout warmth exhaustion, the physique’s core temperature is often lower than 104 levels Fahrenheit, however blood strain is low and the guts will not be pumping blood as effectively because it ought to.

At this stage, the physique continues to be doing what it’s presupposed to. “You’ll be very fatigued and sweating loads and thirsty—so these pure defenses in opposition to warmth and dehydration are nonetheless working,” says Peter Shearer, MD, affiliate director of the Mount Sinai Hospital emergency division in New York Metropolis.

Warmth exhaustion doesn’t essentially result in heatstroke—however it might, says train physiologist Michael Bergeron, PhD, president and CEO of Youth Sports activities of the Americas. Bergeron describes exertional heatstroke as “a transparent medical emergency affecting a number of physique programs,” which often happens when the physique’s core temperature rises above 104 levels.

Heatstroke causes the central nervous system to malfunction. It could actually additionally harm the mind, coronary heart, liver, kidneys, spleen, and muscular tissue. “Your physique loses the flexibility to thermoregulate, so at that time it’s way more tough to reverse itself,” says Dr. Shearer. 


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