Quick Answer
When hiking in a heat wave, take precautions to avoid heat exhaustion and dehydration, including staying hydrated, wearing light and loose clothing, and taking regular breaks in shaded areas.
Staying Hydrated
Drink at least 1 liter of water per 5 miles of hiking, and consider adding electrolyte-rich beverages to your hydration plan. Aim to drink 1 cup of water every 20 minutes. Monitor your urine output to ensure you are drinking enough water - if it’s dark yellow or amber-colored, you need to drink more.
Protecting Yourself from the Sun
Wear light-colored, loose-fitting clothing that allows for good airflow and won’t trap heat. Bring a hat or visor to protect your face and neck from the sun, and apply a broad-spectrum sunscreen with at least SPF 30. Take regular breaks in shaded areas to avoid prolonged exposure to direct sunlight.
Recognizing and Treating Heat-Related Illnesses
Be aware of the signs of heat exhaustion, including heavy sweating, pale skin, fast and weak pulse, nausea or vomiting, and dizziness or fainting. If you or someone in your group experiences these symptoms, move to a shaded area and rest. Remove excess clothing and apply cool compresses or wet cloths to the head, neck, and arms. Encourage the person to drink water or an electrolyte-rich beverage, and seek medical attention if symptoms worsen or do not improve within 15-20 minutes.
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