"Walking at our own pace creates an unadulterated feedback loop between the rhythm of our bodies and our mental state ... When we stroll, the pace of our feet naturally vacillates with our moods and the cadence of our inner speech; at the same time, we can actively change the pace of our thoughts by deliberately walking more briskly or by slowing down."
https://www.newyorker.com/tech/annals-of-technology/walking-helps-us-think