In musical theater, there's an old saying: "When you're too emotional to talk, you sing. When you're too emotional to sing, you dance." Song and movement on stage express intense emotions that are difficult to put into words. They can embody various feelings, such as the weight of guilt in "Who Am I?" from Les Misérables, the ecstatic and defiant confidence in "Don't Rain On My Parade" from Funny Girl, or even the crushing mundanity depicted in the opening number "Another Day in the Sun" from La La Land. This analogy helps neurotypical individuals understand what stimming is like—an outward expression of inward emotions using our body or voice.

Stimming is a behavior that is common to varying degrees in many individuals, but it is especially prevalent among autistic people. Almost anyone can be observed bouncing their foot or clicking a pen during a dull class or meeting, but stimming is often more noticeable and frequent in those with autism. It is believed to be a self-regulatory behavior, with autistic individuals stimming in overwhelming or under-stimulating environments to enhance their ability to cope effectively and increase comfort.

There are numerous ways in which people stim, as it encompasses a wide range of human behaviors. Hand and arm flapping are commonly observed forms of stimming, as well as tapping or bouncing one's foot or leg. Stimming can also involve vocalizations such as repeating phrases, whistling, or singing. Objects can be part of stimming too, like fiddling with a pen, playing with beads on a bracelet or necklace, or running one's hand along a textured surface. Essentially, any repetitive action can be considered stimming, but it is not necessary to categorize whether something qualifies as stimming or not. Stimming brings simple joy, so overthinking it is counterproductive.

It's crucial to remember that stimming is a natural and beneficial behavior, and attempting to suppress it will only lead to frustration and distress for individuals. As long as the stimming behavior is not harmful or disruptive, there is nothing wrong with allowing oneself to engage in it. Moreover, for those who do not stim, it is important to respect and allow individuals who do stim to do so without interference. Nothing is more disheartening than trying to enjoy oneself by excitedly moving one's arms, only to be met with strange looks. Stimming is a delightful and positive aspect, not something peculiar or bothersome. Everyone should embrace and enjoy it, as it is part of autistic individuals' unique experience of the world and an inherent aspect of natural body language for everyone.

Reference:

"It feels like holding back something you need to say": Autistic and Non-Autistic Adults' Accounts of Sensory Experiences and Stimming by Rebecca A. Charlton, Timothy Entecott, Evelina Belova, and Gabrielle Nwaordu.