What is it about walking?

“So, what is it about walking? In a brief survey of the prevailing popular psychology, I found an abundance of earnest hypotheses. Focus the mind on some vigorous, repetitive activity, and the “subconscious” will go to work to solve the more difficult problems (in other words, get yourself out for a good walk, stop thinking so hard, and the answer may just come to you). Walking exposes us to a constantly changing environment, provoking novel associations and connections. The natural rhythms of walking produce alpha waves in the brain, establishing a mental state that allows for deeper creative thinking. Exercise causes the brain to become awash with exotic chemicals — serotonin, endorphins, endocannabinoids — that elevate the happy walker to new creative heights.”
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This Is Your Brain on Walks — Medium