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Heat exhaustion is the opposite of hypothermia—the core body temperature increases, usually as a result of hot and humid conditions, plus a lack of water.

Prevention of Heat Exhaustion

  • Drink plenty of water.
  • Take frequent breaks.
  • Dress in layers, and then shed layers as physical activity increases.

Symptoms of Heat Exhaustion

  • Pale and clammy skin
  • Weakness
  • Nausea
  • Headache
  • Muscle cramps

Treatment of Heat Exhaustion

  • Move to a cooler place, and drink water.
  • Fan to lower body temperature, but don’t over-chill.
Heat index chart