Do you really need to take 10,000 steps a day? - Shannon Odell

1,103,794 views ・ 2025-01-02

TED-Ed


Please double-click on the English subtitles below to play the video.

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While most people avoid spending the night in jail,
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Jean Béliveau jumped at the opportunity.
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For the past three years, Béliveau had been walking from country to country,
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with the goal of circumnavigating the globe on foot.
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This required sleeping in tents,
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strangers’ homes, and the occasional jail cell along the way.
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But this morning, as Béliveau was ready to leave,
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the police chief, who had agreed to his sleeping arrangement,
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was nowhere to be found, and the guards weren’t buying his story.
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Few people have the time or desire to walk such extreme lengths.
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However, research shows that adding even a modest amount of walking
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to your daily routine can dramatically improve your health.
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So, what exactly happens to your body when you increase your daily step count?
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A single afternoon stroll can improve your mood
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and ease symptoms of anxiety and depression.
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Walking, especially at a brisk pace,
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is thought to trigger the release of pain-relieving endorphins
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and curb the release of the stress hormone cortisol.
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Within weeks of adding more steps to your routine, your body adapts.
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While it may seem simple, walking requires the coordination and effort
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of many muscles in your legs, torso, and back.
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To keep up with the increase in energy demand,
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the vessels around these muscles are remodeled to deliver more oxygen.
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At the same time, your heart becomes more efficient at pumping blood.
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In a few months, these changes can lower your blood pressure
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and reduce your risk of heart attack and stroke.
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Carrying the weight of your body as you walk places stress on the bones.
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But this stress actually makes the bones stronger,
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as it stimulates the absorption of calcium and minerals.
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That's why years of consistent walking can help retain bone density,
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which usually declines with age.
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Building a lifelong walking habit comes with many other benefits,
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from aiding in weight management to reducing your risk for type 2 diabetes,
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numerous cancers, and dementia.
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Simply put, walking is exercise.
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And unlike other forms, it doesn’t require equipment,
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and is often more accessible to people of varying ages and fitness levels.
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While activity trackers usually bill 10,000 steps as the ideal benchmark,
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studies show that any increase in steps per day can yield health benefits.
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And these steps don't need to be taken continuously.
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For those who live in walkable neighborhoods,
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steps are easily accumulated throughout the day;
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walking to work, to pick up groceries, or to meet with friends.
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And living where shops and amenities are easy to get to on foot
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comes with its own set of perks.
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Residents in these communities are often less reliant on vehicles,
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which translates to improved air quality
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and reduced local greenhouse gas emissions.
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And it can even change the way you see the world.
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One study of seniors in Hong Kong
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found that those living in more walkable neighborhoods
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reported feeling less loneliness and more life satisfaction
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than those living in less walkable neighborhoods.
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So, why doesn’t everyone just walk more?
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One big reason is that many people don’t have access
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to safe, well-maintained places to stroll.
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Despite the known benefits of walking,
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many cities and towns have been designed with only driving in mind.
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State and local governments across the globe often prioritize
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funding for highways and roads over sidewalks and public parks.
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And even when walkable spaces exist,
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the routes to get to them aren’t always pedestrian-friendly.
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In the US, residential and commercial areas are typically zoned separately
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and often only connected by busy roadways.
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But there are ways to make places more foot-friendly.
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In 2013, Vancouver city officials opened the Comox-Helmcken Greenway,
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taking a two-kilometer road
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and converting it into a walkable and bikeable space.
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Studies found that after opening,
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people living close to the greenway got more exercise,
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reduced their daily car trips by 23%,
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and cut their personal greenhouse gas emissions by 21%.
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And even small measures can help.
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In places like Bethel, Vermont, for example,
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community members have improved the walkability of their downtowns
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by adding simple features like painted crosswalks and curb extensions.
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As for Béliveau, the guards eventually let him out.
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He’d walk over 75,000 kilometers in total to complete his journey.
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But it’s clear you don’t have to take quite this many steps to see an impact.
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