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Water.Day_shower in nature in the middle of nowhere
Cold showers cut sick days by 29%

A 2025 PLOS ONE analysis of 3,177 people confirmed that regular cold shower exposure reduces workplace sickness absence by nearly one-third.

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_PFAS_two man with safety vest and caution banner
Your body struggles to eliminate PFAS

Human enzymes can't break the carbon-fluorine bond. PFAS persists in blood and organs for years.

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Water.Day_African woman in kitchen
87% of water and sanitation loan recipients are women

That's not a coincidence—it's recognition that women are the ones managing household water needs and they're the key to solving this crisis.