Stimming: why Autistic people stim, and why it should be allowed

What stimming is

Stimming is short for self-stimulatory behaviour. It includes rocking, hand-flapping, humming, tapping, spinning objects, chewing, pacing, fidgeting, repeating words or phrases, and many other things. Stimming isn't only an Autistic thing: most people jiggle a foot, click a pen or twirl their hair. The difference is that the forms non-Autistic people use are socially unremarkable, and the forms Autistic people use are not.

What stimming does

Autistic adults who are asked about their own stimming describe the same handful of jobs it does:

• Regulating sensory input: adding or dampening input so your system stays workable
• Managing overwhelming emotion: giving intense feeling somewhere to go
• Maintaining focus and thinking: movement or rhythm that keeps thought flowing
• Expressing feeling: joy, excitement and distress often show up in movement and sound
• Coping with difficult environments: a way through places that cost more than they should

Why suppressing stimming causes harm

For decades, stimming was treated as a behaviour to be stopped, on the assumption that it made Autistic people look strange and got in the way of learning and social life. Applied Behaviour Analysis and similar approaches put enormous effort, and caused significant distress, into trying to eliminate it. That was a serious mistake, and many adults are still living with the effects of learning as children that their own way of regulating was forbidden.

Stopping a stim doesn't remove the need it was meeting. It removes the tool for meeting it, while the sensory and emotional pressure keeps building and finds another outlet, usually a less convenient one. Suppressing stimming is associated with more anxiety, burnout and psychological harm. It's also a direct lesson in shame, because the message isn't “do that differently”, it's “the way your body looks after itself isn't acceptable”. That's part of how masking gets learned.

What if a stim causes physical harm?

The one legitimate exception is a stim that hurts you, like biting or hitting yourself hard enough to injure. The answer isn't to eliminate it. It's to look, with you, not to you, for a safer substitute that gives the same sensory input, whether that's pressure, pain, rhythm, movement or something for your mouth. A substitute that doesn't deliver the same input won't work, and its failing isn't non-compliance.

Making room to stim

• Let yourself stim without apologising, and without checking whether it's “allowed”.
• Keep tools you like within reach: fidgets, chewable jewellery, weighted items, headphones.
• Build movement into your day. Sitting still is a demand, and it's rarely recognised as one.
• If you have to hold a stim in for a while, plan a time and place to let it out afterwards.
• Look for spaces, like Autistic community spaces, where stimming is unremarkable.

Common questions

Is stimming a bad thing?

No. Stimming is a regulation tool. It only becomes a problem if it causes physical harm, and then the answer is a collaborative search for a safer substitute that gives the same sensory input, not stopping it.

Why do I stim more when I'm stressed or excited?

Stimming helps regulate sensory input and emotion, so it often increases when there's more to manage, whether that's overload, anxiety or joy. A rise in stimming can also be an early sign of sensory load building.

Can you stop stimming? Should you?

Many Autistic people can hold stims in for a while, but suppression has costs, including more anxiety and burnout. It doesn't remove the need behind the stim, so it tends to find another outlet.

Do non-autistic people stim?

Yes. Foot-jiggling, pen-clicking and hair-twirling are all stims. The difference is which forms are seen as normal.