What is a practical guideline for fluid intake during prolonged rehab?

• A. Provide small, frequent sips or 250-500 ml of fluids every 15-20 minutes, adjusted for sweating and tolerance
• B. Drink as much as possible at the start of rehab and then stop until thirsty
• C. Only consume beverages with caffeine to maintain alertness
• D. Avoid fluids unless the firefighter feels extremely thirsty

Answer: (A)

Maintaining hydration during prolonged rehab means delivering fluids on a steady, regular schedule that matches ongoing losses from sweat. The most practical approach is to offer small, frequent sips or about 250–500 ml of fluids every 15–20 minutes, with the amount adjusted for how much you’re sweating and what you can tolerate. This pace keeps blood volume stable, supports cooling, and helps prevent dehydration without overwhelming the stomach or causing GI discomfort.

Thirst is a late cue, so waiting until you feel thirsty can let dehydration creep in. Large amounts at the start and then stopping until you’re thirsty ignores continuous fluid losses. Be cautious with caffeine-containing drinks here, as they can have diuretic effects and aren’t ideal for steady hydration. And avoiding fluids altogether or only drinking when extremely thirsty is unsafe during prolonged exertion, since dehydration and heat strain can develop quickly.