Progress & Troubleshooting
Why Is My Child's Leg Sinking?
One of the most common questions we hear poolside — and almost always fixable without touching the kick itself.
Quick Answer
A child's legs commonly sink during backstroke or freestyle because of body position, insufficient core engagement, incorrect head position, or ineffective kicking technique — usually a combination of the first three rather than a lack of effort. Fixing head and hip position almost always resolves it faster than practising the kick harder.
What's Actually Happening
When a child's legs sink, their body is no longer in a flat, horizontal line in the water — the hips and legs drop below the surface while the chest or head stays higher. This creates drag, makes kicking far less effective, and tires a child out much faster than a properly aligned body position would.
Why It Feels Confusing for Parents
The instinct is to assume the fix is "kick harder" or "kick faster" — but a child kicking hard from a poor body position often sinks worse, not better, because the effort goes into fighting the water rather than propelling through it. This is why sinking legs can persist for months even in a child who's clearly trying.
The Real Causes
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Head position — lifting the head too high (common in nervous swimmers trying to keep their face clear of water) drops the hips and legs automatically
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Core engagement — a relaxed, uncontrolled trunk lets the lower body drift downward
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Kicking from the knee — bent-knee "bicycle kicking" instead of a straighter, hip-driven kick wastes propulsion and drags the legs down
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Breath-holding tension — a tense, held breath changes buoyancy and body position compared to relaxed breathing
What Actually Fixes It
Go back to float and body-line drills before touching the kick — a relaxed front or back float with the head in a neutral position (ears in the water, not craning up) is the base fix. Once body position holds, reintroduce kicking from the hip with straighter legs and pointed toes. Practising in short, repeated bursts — a lap of "just floating and gliding" — tends to fix this faster than a lap of effortful kicking.
In Singapore
This is one of the most common issues our coaches see across every pool in Singapore, regardless of lesson format — it's a body-position issue, not something specific to any particular pool or programme. If your child is working toward a SwimSafer stage, sinking legs are usually addressed as part of standard stroke refinement in Stages 2 and 3.
Coach's Advice
If your child has been "stuck" on sinking legs for a while, ask their coach to spend a session purely on floats and glides with zero kicking. It feels like a step backward to most parents, but it's usually the fastest route back to visible progress.
Mistakes to Avoid
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Assuming the fix is kicking harder rather than fixing body position
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Practising kicking drills before a relaxed float is solid
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Not noticing that head position is the root cause
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Getting frustrated with a child who's clearly trying but not improving
Your Checklist
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Watch whether your child's head is lifted too high during the stroke
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Practise a relaxed float before reintroducing kick drills
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Check for bent-knee 'bicycle kicking' versus a straighter hip-driven kick
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Ask your coach to isolate body position from kicking for one session
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Be patient — this is a common fix that takes a few focused sessions, not one
Common Questions
Frequently Asked Questions
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