Anon: There is no such thing as peace, as even our bodies are | The Catloaf Channel

Anon: There is no such thing as peace, as even our bodies are in a constant state of war.

See: The connection between hippocampal atrophy in depression and how that same region of the brain is used to navigate 3d spaces like rooms in houses. The theory is that if you sit in the same space for too long parts of your brain like the hippocampus shrink and this can contribute to depression, which in turn tends to keep you isolated in a vicious circle. Hiking is one of the best exercises because you are moving through new spaces in all dimensions and your brain and body have to work together, strengthening connections and forming new ones. On a treadmill you are using the same muscles over and over and your brain shuts off. Same with gym & car in general. Enclosed spaces where your body isn't constantly adapting to a rapidly evolving environment.