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Water.Day_Women in Bed waking up
You literally lose a bottle of water sleeping

Your body loses about 0.47 liters of water just through overnight breathing - that's why you wake up naturally thirsty.

More bite-sized facts

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Water.Day_water droplets on car window
Water can be liquid at -40°C without freezing

"Supercooled" water stays liquid way below freezing until you tap it—then it instantly turns to ice before your eyes.

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Water.Day_water with ice in glass
Drinking cold water burns more calories than warm

Your body uses energy to heat cold water to body temperature, burning about 8 extra calories per glass.

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Water.Day_cucumber in a water glass
Infusion Speed: Test Results

The breakdown: Cucumber shows flavour in 10 minutes. Lemon peaks at 1 hour. Ginger needs 2+ hours in water.