In 2017 I realized I presented some atypical behavior when I was on my own. I decided to film it. Yet, at the time I did not manage to figure out what the behavior was, therefore I had decided not to publish it.
Two years later I learned that the behavior was called stimming, or self- stimulatory behavior. It is considered a protective response to over-stimulation, in which people calm themselves by blocking less predictable environmental stimuli by replacing it with repetitive stimuli. All senses, not only tactile, but also visual, auditory and vestibular can be used to stim. Common stims are hand flapping, rocking, excessive blinking, pacing, head banging, repeating noises or words, snapping fingers and spinning objects.