Very heavy perspiring or severe diarrhea can result in a serious reduction in the body's water content known as dehydration.
Answer:
Anyone certifited to take care of sick or injured people.
Explanation:
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When active in extreme weather you should always mind two things, your outfit and hydration. Keeping yourself hydrated and protected is essential, as wearing a cap and sunglasses can protect you in the sun just like scarves and gloves can protect you in the cold. Hydration is of extreme importance because you can collapse without enough water during a hot weather wave.