目錄
Introduction
Swimming and dehydration seem like opposites — children surrounded by water could not possibly be short of it, right? In fact, young swimmers are at real risk of dehydration, especially in Hong Kong’s brutal summer. Exercise in warm weather drains fluids rapidly, and the pool hides the evidence: children do not notice how much they are sweating because the water washes it away. Here is what parents need to know about keeping young swimmers properly hydrated.
Why Swimmers Get Dehydrated
The body cools itself through sweat, and swimming is genuine exercise — often vigorous exercise. Children sweat in the pool just as they would on a running track, but the water masks the sensation. Add Hong Kong’s heat and humidity, and a child can lose significant fluid during a single lesson without anyone noticing. Thirst is a late signal: by the time a child feels thirsty, mild dehydration has already begun.
Signs of Dehydration in Children
- Headache or dizziness
- Dry lips and mouth
- Unusual tiredness or irritability
- Dark urine or reduced trips to the toilet
- Muscle cramps
- Complaints of feeling hot or “weird” despite being in water
The Hydration Rules for Swim Days
- Start hydrated — children should drink water through the day before a lesson, not just at the pool
- Bring a labelled bottle — place it at the poolside where your child can reach it during breaks
- Drink on schedule — encourage sips at every rest, even when your child says they are not thirsty
- Water first, treats later — sugary sports drinks are unnecessary for children’s lessons; water is the right choice
- Rehydrate after — the job is not done at the pool gate; keep water flowing for the rest of the day
Swimming in the Peak Heat
For outdoor pool sessions, timing matters as much as drinking:
- Prefer morning or late-afternoon lessons during the hottest months
- Apply sunscreen before the lesson and reapply at breaks
- Watch for the hottest hours between 11am and 3pm
- Listen to your child — if they say they feel too hot, take them seriously
Heat and Humidity: The Hong Kong Combination
Hong Kong’s summer combines high temperature with crushing humidity, which impairs the body’s natural cooling. Children are more vulnerable to heat than adults — they produce more heat relative to their size and adapt more slowly. Parents should be extra attentive during the first hot weeks of summer, before children’s bodies have acclimatised.
A Healthy Summer Swimming Habit
Hydration is a habit, and habits form through routines: the water bottle in the bag, the drink at the break, the refill on the way home. Children who learn to hydrate properly during swimming lessons carry the habit into every sport they play later in life — one more quiet gift from the pool.
Swim Safely All Summer
Summer swimming should be joyful, and a few simple habits keep it that way. Whampoa Sports Club coaches watch out for young swimmers’ wellbeing in every session, and our classes are organised to keep children safe and comfortable through the hot months. Visit our official website or message us via WhatsApp to learn about our summer children’s courses at public pools across Kowloon — and swim happy, swim hydrated.