How to Know If You're Drinking Enough Water This Summer
Briefly

Heat-related illness can occur when exposed to temperatures above 90 degrees Fahrenheit, particularly in humid climates, reducing blood volume and increasing the heart's workload, leading to dehydration and overheating.
Dehydration limits sweating, causing overheating, muscle cramps, and potentially fatal conditions like heat exhaustion and heat stroke; recognizing the signs of heat-related illness is vital to prevent severe consequences.
Read at www.scientificamerican.com
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