In some ways, the findings of this walkability study should feel intuitively obvious. But at the same time, it's an important reminder that we are all products of our environment. If you grow up and live in a city like San Francisco, there's going to be a higher probability that you will choose a career in something tech-related versus if you're in, say, Scranton, Pennsylvania. If you grow up and live in a city like Copenhagen, there's going to be a higher probability that you will cycle versus if you're in, say, Badger, Alaska.
And, it turns out, if you live in a walkable city, you're more likely to walk. Importantly, it doesn't appear to be because of some sort of "selection effect," meaning that people who like to be active naturally gravitate to more walkable cities. In the study, researchers analyzed smartphone data from 2013 to 2016 for 2 million people, including more than 5,000 people who moved during this time. What they found was that after relocating to a more walkable city, people took on average about 1,100 more steps a day (roughly 11 minutes of extra walking).
The inverse was also true: people who relocated to less walkable cities tended to walk less. Again, on some level, this may seem intuitive, but it shows just how mutable our behaviours are. People will generally do what their built environments have been designed to accommodate — whether that's driving, cycling, or walking. Perhaps this also explains why, when I'm traveling, I want to buy that absurd article of clothing that I know I'll never wear back home in Toronto.
At the time, and in that environment, it feels appropriate.
Cover photo by Abby Rurenko on Unsplash
Map from Scientific American
Most of us have heard of the so-called "Blue Zones." These are the parts of the world where there is an exceptionally high number of centenarians — people over the age of 100. We've talked about this topic before, covering the importance of things like diet, community, and constant moderate physical activity. But I would like to reiterate just how impactful our physical environments can be on our overall well-being.
The island of Sardinia is one of the world's Blue Zones. But it's not actually the entire island of Sardinia; it's a specific inner mountain region that is the Blue Zone. And in this region, at least two things are fascinating: First, the men have some of the longest average life expectancies in the world and second, the men live just as long as the women do. This is unique. Ordinarily, women outlive men. But not here.
The data overwhelmingly suggests that this outcome is the result of topography and employment. Because it is a mountainous region, the built environment is filled with steep inclines and staircases everywhere you go. The result is that even walking down the street to go to church or the grocery store results in organic moderate physical activity.
At the same time, the men in this region have historically worked as shepherds. This meant that work also involved walking up and down hills all day. Again, more organic moderate physical activity. Because of this, research has found very significant correlations between longevity and pastoralism, the average slope of the territory, and the average daily distance required to reach work. The steeper the better.
There's little mystery here. We know that more activity is better for us than less. The challenge is that we can't all live in bucolic mountain towns and chase sheep around all day. Modern society demands a lot of sitting and typing and vibe coding. We also have a market economy that is constantly looking for ways to make our lives more convenient so that we're able to do even more sitting around.
We try to compensate for this with gyms and other fixes (“
Last week in Japan was the first time I had ever driven a car on the left side of road. I spent a summer working in Dublin many years ago but I never once drove while I was there.
To be honest, I thought it was going to be more awkward than it was. But other than accidentally turning on the wipers a few times (they were on the opposite side to where turn signals typically live), it came to me pretty quickly.
I also noticed that left-hand traffic seems to impact the flow of many other things in Japan. On sidewalks, for example, people walk on the left. And on escalators, everyone stands on the left (and walks on the right), whereas the opposite tends to be true in Toronto.
Japan is also an orderly and rule-abiding place and so these conventions are widely followed. On more than a few occasions, I realized I was swimming upstream and then quickly switched sides.
What’s interesting is how this directional convention permeates so many aspects of everyday life. Which begs the question: where and when did it start? Do the "rules of the road" always influence everything else?
The answer seems to be that nobody really knows. There are many unproven theories. Some suggest that it has to do with how horses were ridden and walked, and that ~90% of people are right-handed.
But I couldn’t find anything definitive. What we do seem to know, at least anecdotally, is that once a side is chosen, it broadly impacts how people generally move around. Pay attention the next time you're on a busy sidewalk.
In some ways, the findings of this walkability study should feel intuitively obvious. But at the same time, it's an important reminder that we are all products of our environment. If you grow up and live in a city like San Francisco, there's going to be a higher probability that you will choose a career in something tech-related versus if you're in, say, Scranton, Pennsylvania. If you grow up and live in a city like Copenhagen, there's going to be a higher probability that you will cycle versus if you're in, say, Badger, Alaska.
And, it turns out, if you live in a walkable city, you're more likely to walk. Importantly, it doesn't appear to be because of some sort of "selection effect," meaning that people who like to be active naturally gravitate to more walkable cities. In the study, researchers analyzed smartphone data from 2013 to 2016 for 2 million people, including more than 5,000 people who moved during this time. What they found was that after relocating to a more walkable city, people took on average about 1,100 more steps a day (roughly 11 minutes of extra walking).
The inverse was also true: people who relocated to less walkable cities tended to walk less. Again, on some level, this may seem intuitive, but it shows just how mutable our behaviours are. People will generally do what their built environments have been designed to accommodate — whether that's driving, cycling, or walking. Perhaps this also explains why, when I'm traveling, I want to buy that absurd article of clothing that I know I'll never wear back home in Toronto.
At the time, and in that environment, it feels appropriate.
Cover photo by Abby Rurenko on Unsplash
Map from Scientific American
Most of us have heard of the so-called "Blue Zones." These are the parts of the world where there is an exceptionally high number of centenarians — people over the age of 100. We've talked about this topic before, covering the importance of things like diet, community, and constant moderate physical activity. But I would like to reiterate just how impactful our physical environments can be on our overall well-being.
The island of Sardinia is one of the world's Blue Zones. But it's not actually the entire island of Sardinia; it's a specific inner mountain region that is the Blue Zone. And in this region, at least two things are fascinating: First, the men have some of the longest average life expectancies in the world and second, the men live just as long as the women do. This is unique. Ordinarily, women outlive men. But not here.
The data overwhelmingly suggests that this outcome is the result of topography and employment. Because it is a mountainous region, the built environment is filled with steep inclines and staircases everywhere you go. The result is that even walking down the street to go to church or the grocery store results in organic moderate physical activity.
At the same time, the men in this region have historically worked as shepherds. This meant that work also involved walking up and down hills all day. Again, more organic moderate physical activity. Because of this, research has found very significant correlations between longevity and pastoralism, the average slope of the territory, and the average daily distance required to reach work. The steeper the better.
There's little mystery here. We know that more activity is better for us than less. The challenge is that we can't all live in bucolic mountain towns and chase sheep around all day. Modern society demands a lot of sitting and typing and vibe coding. We also have a market economy that is constantly looking for ways to make our lives more convenient so that we're able to do even more sitting around.
We try to compensate for this with gyms and other fixes (“
Last week in Japan was the first time I had ever driven a car on the left side of road. I spent a summer working in Dublin many years ago but I never once drove while I was there.
To be honest, I thought it was going to be more awkward than it was. But other than accidentally turning on the wipers a few times (they were on the opposite side to where turn signals typically live), it came to me pretty quickly.
I also noticed that left-hand traffic seems to impact the flow of many other things in Japan. On sidewalks, for example, people walk on the left. And on escalators, everyone stands on the left (and walks on the right), whereas the opposite tends to be true in Toronto.
Japan is also an orderly and rule-abiding place and so these conventions are widely followed. On more than a few occasions, I realized I was swimming upstream and then quickly switched sides.
What’s interesting is how this directional convention permeates so many aspects of everyday life. Which begs the question: where and when did it start? Do the "rules of the road" always influence everything else?
The answer seems to be that nobody really knows. There are many unproven theories. Some suggest that it has to do with how horses were ridden and walked, and that ~90% of people are right-handed.
But I couldn’t find anything definitive. What we do seem to know, at least anecdotally, is that once a side is chosen, it broadly impacts how people generally move around. Pay attention the next time you're on a busy sidewalk.
But the better and more fundamental solution is organic moderate physical activity. Meaning, moderate physical activity that we don't have to actively seek out, and that is organically embedded throughout our everyday lives. It's best when it's a lifestyle. And this is one of the reasons why I view cities where walking and cycling are ingrained as a great luxury. All else being equal, these places are destined for better health outcomes.
If I look up my Apple Health data for 2025, there are very clear spikes in steps whenever I'm traveling. This makes sense. It's because I like going to places where I can walk around all day and be physically active. I can only sit on a beach for so long. But it's also ironic that modern life dictates that I have to go on vacation in order to be more active. That's not how Blue Zones work.
There is no greater luxury than our health. Without it, nothing else matters. And so I think it behooves us to make it a fundamental component of city building.
Cover photo by Valentina Uribe Posada on Unsplash
But the better and more fundamental solution is organic moderate physical activity. Meaning, moderate physical activity that we don't have to actively seek out, and that is organically embedded throughout our everyday lives. It's best when it's a lifestyle. And this is one of the reasons why I view cities where walking and cycling are ingrained as a great luxury. All else being equal, these places are destined for better health outcomes.
If I look up my Apple Health data for 2025, there are very clear spikes in steps whenever I'm traveling. This makes sense. It's because I like going to places where I can walk around all day and be physically active. I can only sit on a beach for so long. But it's also ironic that modern life dictates that I have to go on vacation in order to be more active. That's not how Blue Zones work.
There is no greater luxury than our health. Without it, nothing else matters. And so I think it behooves us to make it a fundamental component of city building.
Cover photo by Valentina Uribe Posada on Unsplash
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