Walking is thinking that happens to move
The oldest productivity tool is still undefeated.
Every writer's trick for getting unstuck eventually reduces to the same instruction: go for a walk. There is real machinery behind the cliché.
A steady, undemanding pace occupies just enough of the body to let the mind wander without falling asleep. Problems that felt like walls at the desk turn into doors somewhere around the second block.
You do not need a route or a step count. You need twenty minutes, no headphones, and the willingness to come back with a worse mood and a better idea.