“Now, MIT engineers have found that exercise can also have benefits at the level of individual neurons. They observed that when muscles contract during exercise, they release a soup of biochemical signals called myokines. In the presence of these muscle-generated signals, neurons grew four times farther compared to neurons that were not exposed to myokines. These cellular-level experiments suggest that exercise can have a significant biochemical effect on nerve growth.”

https://news.mit.edu/2024/when-muscles-work-out-they-help-neurons-grow-1112

https://doi.org/10.1002/adhm.202403712