When faced with a problem that seems unsolvable, some people find that taking a walk helps them come up with solutions more easily. According to Dr. Donia Mahjoub, a neurologist, the brain is often better at finding solutions while walking, as it is more likely to generate ideas and make connections. However, this does not mean that thinking is always better while standing up; it depends on the task at hand. Walking activates what is sometimes called the "autopilot" mode, requiring little attention from the brain. The rhythmic nature of walking and the automatic processes involved in locomotion free up mental resources, allowing the mind to wander and break free from rigid patterns of thinking. When people stay in front of their screens for long periods trying to find an absolute solution, they may end up going around the same ideas. Walking allows more ideas to come rather than desperately seeking THE right answer, which is particularly useful when imagining several solutions to a problem or taking a step back from a situation. Research indicates that walking can enhance divergent creative thinking, which involves generating many different ideas. In 2014, two scientists from Stanford University, Marily Oppezzo and Daniel Schwartz, asked 176 people to perform different creativity tests, sometimes sitting and sometimes walking, including on a treadmill. One of the exercises used was a creativity test where participants were given a common object and asked to imagine as many original ways as possible to use it. The results showed that 81% of participants produced more creative answers when walking than when sitting. This effect could persist briefly after walking. A large study published in 2026 goes in the same direction, observing a positive effect of walking on divergent creative thinking. However, walking does not necessarily help find THE right answer. Convergent thinking, which involves sorting information to reach a precise answer, is not enhanced by walking. Solving an equation, performing a complicated calculation, or carefully analyzing a document requires different brain activity. In practice, walking can be interesting for finding ideas, while sitting is often more effective for analyzing and deepening them. On the biological level, walking has several effects on the nervous system. Physical activity increases blood flow and oxygenation to the brain without necessarily requiring intense effort. Walking's moderate intensity allows the body to be in motion without the effort monopolizing all attention, making it possible to think, talk, or observe the environment. Walking also activates the "default mode" network, a brain network involved in moments when thoughts turn inward, such as recalling a memory, imagining the future, or making spontaneous associations between ideas. These processes are interesting for internal reflection and creativity. Physical exercise has neuromodulatory effects, influencing systems involving dopamine and norepinephrine, as well as neurotrophic factors such as BDNF (brain-derived neurotrophic factor), an important protein for brain plasticity. However, a ten-minute walk does not immediately cause a discharge of BDNF or give a boost to intellectual abilities. A review published in 2025 shows that the results depend on the intensity of the exercise and that long-term effects remain complex to interpret. Long before neuroscience and scientific tests, many philosophers had drawn a connection between walking and thinking. Friedrich Nietzsche wrote in Twilight of the Idols that "Only the thoughts that one has while walking are worth something." Current research gives scientific reality to this ancient intuition, indicating that moving the body can help thoughts get out of usual paths. Walking seems especially interesting when trying to generate ideas, as the brain is more in the global than in the precise. A simple rule to remember is therefore: walk to generate ideas, sit to deepen them.