I have a bit of sunstroke and tired muscles. I feel lethargic too. Ideas?

Fluid, electrolytes. When one is hot, one perspires to cool off. Sweat is composed of fluid and electrolytes so that the body is depleted of electrolytes, especially sodium as well as potassium and magnesium. It is important to replace the electrolytes to maintain the blood volume so that one stays mentally alert and not be lethargic. Fluid with electrolytes allows skeletal and cardiac muscles to function healthily.

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