Stimming: What It Is and How to Support It

Hand-flapping when excited, rocking back and forth when overwhelmed, humming, spinning, repeating a favourite phrase over and over — these are stims, and they are a normal and important part of how many neurodivergent children regulate themselves. For a long time parents were told to stop them; we now understand that supporting stimming, rather than suppressing it, is far better for a child. Here is what stimming is and how to support it well.

What stimming is

Stimming, or self-stimulatory behaviour, is repetitive movement, sound or action — hand-flapping, rocking, spinning, finger-flicking, humming, bouncing, repeating words or sounds, twirling hair, or lining things up. Everyone stims a little; we tap our feet, twirl pens, bite our nails. For autistic children, and many with ADHD, it is simply more frequent and more visible. It is a natural human behaviour, not a symptom to be eliminated.

Why children stim

Stimming does several important jobs. It helps a child regulate — calming an overwhelmed nervous system, or giving an under-stimulated one the input it needs. It helps with focus and processing. It expresses big feelings, joy and excitement just as much as distress. And it soothes and provides comfort. In short, stimming is a child’s own built-in tool for managing how they feel inside, and most of the time it works very well for them.

Don't try to stop it

The old advice was to suppress stimming so a child would “look normal.” We now understand that this is genuinely harmful. Forcing a child to hold in their stims — a kind of masking — is exhausting, removes a vital coping tool, and tends to increase anxiety and lead to bigger meltdowns later, when the pressure finally releases. Stimming is not a behaviour to be trained out of a child; it is something to be understood and, almost always, simply accepted.

When (and how) to step in

The only stims worth redirecting are ones that actually hurt — head-banging, biting, hitting, hard skin-picking — or that are genuinely unsafe. Even then, the goal is never to stop the underlying need, but to swap the action for a safe one that meets the same need: a chewable necklace instead of biting, a firm cushion to hit, deep pressure instead of head-banging. Never simply block a harmful stim and leave nothing in its place; always offer a safe substitute that gives the same input.

How to support stimming

• Let it happen — at home and in safe spaces, freely and without comment.
• Provide stim tools if your child likes them — fidgets, chewable jewellery, a spinner, a trampoline.
• Never shame it or tell your child to stop “being weird”; protect their right to self-regulate.
• If you worry about other people’s reactions, focus your energy on educating them, not on changing your child.

Help others understand

People unfamiliar with stimming sometimes react with concern or judgement, and that can be hard. A simple, calm explanation — “that’s how she calms herself down” — usually settles it. Teaching siblings, wider family and school that stimming is helpful and perfectly okay protects your child’s confidence and, just as importantly, protects their continued access to their own coping tools when you are not there.

For children with ADHD too

Stimming is not only an autism thing. Fidgeting, bouncing a leg, doodling, humming and a need for constant movement are all stims that help many children with ADHD focus and stay regulated. The same principle applies across the board: allow it, provide tools, and do not force a child to sit perfectly still at the cost of their attention and comfort. This article is general information, not medical advice.

Read more

• A Sensory Diet at Home: Helping Your Child Stay Regulated
• A Toolkit for Emotion Regulation: Helping Kids Handle Big Feelings
• Noise Sensitivity at Home: Helping a Child Who Finds Sound Overwhelming
• NDD and Visual Support