I’ve known for my entire adult that going for a walk is how I can think most easily. Walking is not simply moving your thinking mind (some imagined insular thing) outside. The process of walking is thinking. In fact, in his book Spell of the Sensuous: Perception and Language in a More-than-Human World, David Abram proposes that it is not we who are thinking, but rather the environment that is thinking through us. Intelligence and thought are things to be found both in and around the self. “Each place is a unique state of mind,” Abram writes. “And the many owners that constitute and dwell within that locale—the spiders and the tree frogs no less than the human—all participate in, and partake of, the particular mind of the place.”
This is not as hand-wavy as it sounds. Studies in cognitive science have suggested that we do not encounter the environment as a static thing, nor are we static ourselves.
As Francisco Varela, Evan Thompson, and Eleanor Rosch put it in The Embodied Mind (a study of cognitive science alongside Buddhist principles): “Cognition is not the representation of a pre-given world by a pre-given mind but is rather the enactment of a world and a mind… “ (emphasis mine). Throughout the book, the authors build a model of cognition in which mind and environment are not separate, but rather co-produced from the very point at which they meet.