Most of us have had the experience: you're stuck on a problem, you give up and go for a walk, and halfway around the block the answer simply arrives. It feels like luck, but researchers have found that it's surprisingly reliable.
In one well-known study at Stanford, people came up with noticeably more creative ideas while walking than while sitting at a desk. The effect lingered, too: even after they sat back down, their thinking stayed more flexible for a while. Walking outdoors helped, but a treadmill facing a blank wall worked almost as well.
Why would something so ordinary make such a difference? One explanation is that gentle, rhythmic movement occupies just enough of the mind to stop it from fixating on the same few thoughts. Another is mood: a ten-minute stroll reliably lifts people's spirits, and a better mood tends to widen attention.
None of this means you should abandon your desk. But the next time you're wrestling with a stubborn decision, don't keep staring at the screen. Step outside, leave your phone in your pocket, and let your feet do some of the work.