Walking is one of the simplest, most accessible forms of exercise. Yet how much we walk every day may depend less on motivation and more on where we live. A new study published in Nature makes a strong case- living in a walkable city naturally encourages residents to take more steps and with those extra steps come significant health benefits.Researchers from the University of Washington analyzed data from more than 5,400 people who moved between 1,600 U.S. cities. Using data from the Argus step-tracking app, they tracked changes in daily steps when participants relocated from less walkable cities to more pedestrian-friendly environments, and vice versa.The results were striking. On average, people gained or lost about 1,100 steps per day depending on whether their new city promoted or discouraged walking. That shift is far from trivial: prior studies have shown that every extra 1,000 daily steps can lower the risk of death by 15 percent.As lead researcher Tim Althoff put it, “How much you walk is not just a question of motivation. The built environment is clearly one of the factors shaping daily behavior.”How To Measure A City's Walkability?The researchers assessed cities using a “walk score” ranging from 0 to 100, based on how easy it is to accomplish daily tasks—like grocery shopping, commuting, or dining out—on foot.For example, New York City boasts a walk score of 89, while Seattle comes in at 74, classifying it as “very walkable.” By contrast, cities with sprawling layouts, limited sidewalks, and heavy car dependence fall much lower on the scale.When participants moved from a city with an average walk score of 48 to a high-scoring city like New York, their steps jumped by an average of 1,400 per day. The reverse was also true those leaving walkable cities saw their activity decline by roughly the same amount.This study provides some of the strongest evidence yet that urban design shapes human health in measurable ways.Surprising Health Benefits of WalkingWalking may seem ordinary, but research continues to confirm its extraordinary benefits. According to Harvard Health, doctors are increasingly prescribing walking as a “wonder drug” for patients. Here’s why:Counteracts obesity-promoting genes: Brisk walking for an hour a day can cut genetic tendencies toward weight gain by as much as half.Tames hunger for sweets: Studies indicate that a brief 15-minute walk can curb cravings for chocolate and sweet treats, even when stressed.Trims breast cancer risk: Women who walk seven or more hours a week have a 14% reduced risk of breast cancer, even with risk factors such as weight gain or hormone replacement therapy.Tames hunger for sweets: Research indicates that a brief 15-minute walk decreases chocolate and sweet snack desires, even with stress.Decreases risk of breast cancer: Women walking seven or more hours a week have a 14% lower chance of breast cancer, regardless of risk factors such as weight gain or hormone therapy.Preserves joints: Walking greases joints and tightens supporting muscles, preventing arthritis and alleviating present pain.Boosts immunity: Walking 20 minutes a day, at least five times a week, can save 43% of sick days and cut the duration of colds and flu.Together, these facts focus attention on the fact that the 1,100-step disparity associated with walkability is more than just a number—it can mean real disease protection and a better quality of life.Can Where You Live Really Affect How Much Movement You Get?The research is clear that all cities are not created equal for promoting physical activity. Cities with high walk scores tend to have dense urban design, mixed-use zoning, pedestrian-friendly crosswalks, good public transportation, and clean sidewalks.Car-oriented cities, however, in which residents need to drive to get to basic services, discourage walking. Even if the residents wish to walk more, the absence of convenient, safe alternatives becomes an obstacle.That is why urban planning professionals reason that an investment in walkable infrastructure is a public health intervention rather than a transportation choice. Shared sidewalks, connected communities, and parks do not just make a city look pretty; they increase the length of people's lives.Although the present research didn't segment outcomes by gender or income level, earlier studies indicate that women, children, older adults, and poorer populations maximize benefits from walkable environments. Walkability is more than a lifestyle bonus for individuals who lack private car access—walkability is their life dependency every day.Moreover, walkable communities frequently experience more robust social ties, secure streets, as well as economic dividends for neighborhood merchants. That is, walkability has its rewards outside of physical health.The average American adult currently takes between 5,000 and 6,500 steps a day, well below the commonly recommended 10,000-step mark. Moving to or living in a walkable city can make it significantly easier to close that gap without consciously scheduling workouts but even if relocation isn’t on the horizon, individuals can seek out walkable features where they live:Choosing housing near grocery stores, cafes, or transit hubs.Adding “walking meetings” or errands on foot into routines.Advocating for local investments in sidewalks, bike lanes, and green spaces.These strategies can help residents reap the benefits of additional daily steps, regardless of a city’s baseline score.While the study stops short of proving a definitive cause-and-effect relationship, it builds one of the strongest cases to date for the role of urban planning in public health.As Tim Althoff noted, “There’s tremendous value to shared public infrastructure that can really make healthy behaviors like walking available to almost everybody, and it’s worth investing in that infrastructure.”