W-sitting: should you actually worry?

What W-sitting is

Look at your child sitting on the floor from above: if the legs make a W shape (knees together, feet out beside the hips), that's W-sitting. Children love it because it's stable; the wide base means they can play with both hands without working hard at balance.

The honest answer

For most children, W-sitting some of the time is fine, and the internet has been harder on it than the evidence justifies. Children who are flexible find it comfortable, and an occasional W is not going to damage typical hips.

It becomes worth attention when it's the only position a child ever uses, when it goes with very bendy joints, weakness, or delayed motor skills, or when a child physically cannot sit any other way. In those cases the W is usually a clue about core strength or hip flexibility rather than a problem in itself.

What to do

Rather than nagging ('sit properly!'), offer variety: cross-legged, legs out front, side-sitting, kneeling at a low table, or perching on a small stool. Strengthen the core through play: climbing, animal walks, wheelbarrow walking. If your child seems stuck in the W, trips a lot, or avoids other positions entirely, an assessment can find out why and give you a plan.