infographic showing body makeup of water, symptoms of dehydration and how to stay hydrated

When does dehydration occur?

  • At just 1-2% dehydration, or when you’ve lost 1-2% of your body’s water, mental performance and physical coordination start to become impaired — and you’re not even thirsty yet
  • At 2-4% dehydration, you’ll feel thirsty and possibly some of these other symptoms:
    • Fatigue, lethargy, fuzzy thinking
    • Irritability
    • Dizziness
    • Headache
    • Dry mouth and skin
    • Muscle cramps
    • Rapid pulse (100 beats/minute or higher)
    • Fever and chills

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