Children with autism tend to progress faster when they participate in regular physical exercise.
Like most of our exercises involving fine motor finger skills, this is actually a speech development exercise. Providing efficient and reliable connections for fine motor control is an essential step which we take by prompting organized migration from a very populated brain area to its less efficient neighbor.
Stimulating each finger tip with a strong and linear information such as ice cold is novel in the sense that we hardly ever get a pressure with cold temperature, in turn, on all fingers of both hands. The novelty and the power of the information ensure that the brain will process fast and accurately, even in the case of a child or adult with brain injury.