Short answer: there's no universal "8 glasses" rule — your needs depend on body size, activity and how much you sweat. In Singapore's heat and humidity you lose more through sweat, so you need more than someone in a cool climate, and on heavy-sweat days plain water alone may not fully rehydrate you.

Why the 8-glasses rule is a myth

It's a rough catch-all, not science. A practical guide: drink enough that you're rarely thirsty and your urine is pale yellow. Bigger bodies, exercise, and hot environments all push your needs up — which is most of us here for much of the year.

Why humidity changes the maths

When it's humid, sweat evaporates less efficiently, so you sweat more to stay cool — losing both water and electrolytes (sodium, potassium, magnesium). Replacing only water can dilute those electrolytes, so you pee it out rather than absorb it. That's why you can drink all day and still feel drained.

When plain water isn't enough

For everyday life, water and a balanced diet cover it. But after heavy sweating, long outdoor stretches or intense exercise, electrolytes help you actually hold onto fluid. Our Hydrate+ Electrolyte Hydration Tablets top up sodium, potassium and magnesium without the sugar load of typical sports drinks — a useful add on hot, active days rather than every glass.

FAQ

How much water should I drink in Singapore? Enough to stay rarely-thirsty with pale-yellow urine; more on hot or active days.
Do I need electrolytes daily? Usually only after heavy sweating or exercise; everyday needs are met by food and water.
Can I over-hydrate? Rarely, but drinking far beyond thirst isn't better — balance is the goal.

General education only, not medical advice. People with kidney, heart or blood-pressure conditions should consult a doctor about fluids and electrolytes.