Sep 12, 2025
Proper hydration helps maintain concentration and short-term memory. Just 1–2% dehydration can reduce your ability to focus and recall information.
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Water is essential for optimal brain cell communication. Being hydrated improves alertness, mental clarity, and reaction times.
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Dehydration is a common trigger for headaches. Staying hydrated can reduce headache intensity and frequency.
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Even mild dehydration can cause irritability, anxiety, or feelings of fatigue. Drinking enough water can stabilise mood and help you feel calmer.
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Studies show that well hydrated individuals perform better in tasks requiring complex thinking and decision making.
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Dehydration reduces blood flow to the brain, causing sluggish thinking and “foggy” feelings. Hydration keeps oxygen and nutrients flowing smoothly.
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Lack of hydration can disrupt melatonin production and lead to poor sleep quality, which further affects cognitive performance.
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Most adults need 2–3 litres per day (including fluids from food). Adjust intake based on activity level, climate, and health conditions.
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