Maybe you jiggle your leg in meetings, rub the seam of your jeans, or hum the same three notes while you cook. Maybe someone once told you to "stop fidgeting", and you've been quietly holding it in ever since.
That movement has a name: stimming. And for many people, it's not a bad habit. It's a useful tool.
What stimming is
Stimming is short for self-stimulatory behaviour. It usually means repeated movements, sounds or sensations. The NHS lists repetitive movements (stimming), such as rocking, flapping your hands or flicking your fingers, as one of the signs of autism in adults (NHS).
Stims can be big and visible, or so small nobody notices. Some common examples:
| Type | Examples |
|---|---|
| Movement | Rocking, pacing, bouncing, hand flapping, leg jiggling |
| Hands and touch | Finger tapping, rubbing fabric, twiddling hair, clicking a pen |
| Sound | Humming, repeating words or phrases, making noises you like the feel of |
| Sight | Watching a lava lamp or spinning object, flicking your fingers in front of light |
| Hidden | Wriggling your toes in your shoes, pressing your tongue against your teeth |
Why people stim
Stimming does different jobs for different people, and at different times.
In everyday terms, you might stim to:
- Calm down when things are too loud, too busy or too much
- Focus, like pacing while you think or doodling on a call
- Express a feeling, such as bouncing when you're excited or flapping when something's brilliant
- Feel good. Some stims are simply enjoyable, and that's reason enough
A scenario
Imagine you're in a long, noisy team meeting. You notice you're rubbing your thumb against your fingertips, faster and faster. That's not a problem. It's your brain working to stay regulated, and the stim is helping.
Why holding it in can backfire
Lots of autistic people learn to hide their stims to fit in. That's part of masking, and it takes energy (masking: what it is and what it costs).
The same NHS resource advises against suppressing stims unless they cause harm. It warns that holding them in is likely to lead to a build-up of uncomfortable energy and overwhelm, which may contribute to meltdowns, shutdowns or burnout (Leicestershire Partnership NHS Trust).
You can read more in understanding meltdowns and shutdowns.
If you want more discreet options
You never have to hide how you move. But there may be times you'd rather be low-key, and that's your choice to make. The NHS resource notes that choosing when and where to stim can be helpful.
There are more ideas in building your sensory toolkit.
If you're supporting someone
Try not to comment on, or stop, someone's stims. They're usually doing something useful. If you notice a lot more stimming than usual, it might be a sign that someone's overloaded, so a quiet "Do you need a break?" can help. You can find more in sensory overload: what helps in the moment.
When it's worth getting support
Most stims are harmless, and there's no need to change them. The exception is stims that hurt you, such as head banging, hitting yourself, biting your skin or picking until it bleeds.
If that's happening, you're not doing anything wrong, and it doesn't mean something is wrong with you. Some people use strong sensations like these to block out overload. The NHS resource suggests looking at what triggers it and trying safer stims that give a similar strong feeling, such as deep pressure, cold water or something to chew (Leicestershire Partnership NHS Trust).
References
- NHS. Signs of autism in adults. nhs.uk/conditions/autism/signs-in-adults
- Kapp, S. K., Steward, R., Crane, L., Elliott, D., Elphick, C., Pellicano, E., & Russell, G. (2019). "People should be allowed to do what they like": Autistic adults' views and experiences of stimming. Autism, 23(7), 1782–1792. doi.org/10.1177/1362361319829628
- Leicestershire Partnership NHS Trust. Stimming. Autism Space. leicspart.nhs.uk/autism-space/health-and-lifestyle/stimming
- Son, H. M., Calub, C. A., Fan, B., Dixon, J. F., Rezaei, S., Borden, J., Schweitzer, J. B., & Liu, X. (2024). A quantitative analysis of fidgeting in ADHD and its relation to performance and sustained attention on a cognitive task. Frontiers in Psychiatry, 15, 1394096. doi.org/10.3389/fpsyt.2024.1394096
