Name: Why Walking Every Day Changes Your Body (Doctor Explains)
Uploaded: 2026-03-29T03:06:26.000Z
Duration: 18 min 12 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

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So walking is probably the most underrated health intervention that exists.

and I get that that sounds like a bit of a bold claim when we live in this world full of expensive gym memberships and protocols and Peloton and supplement stacks and all of that other expensive stuff.

But the research on what consistent daily walking does to your body is remarkable;

And most people have no idea how far these benefits actually go beyond just sort of burning a few calories here and there.

I'm an emergency medicine doctor with nearly a decade working across the NHS,

and my goal these days is to help you prevent the end-stage disease that I see every single day, to teach you what I've learned over the years.

Now, one thing that I've noticed consistently during this time is that there is a clear difference between patients who walk into the cubicle and those who struggle to walk.

The ones still walking regularly as they get older, they recover faster, they have fewer complications,

What we know is that movement is one of the most powerful predictors of how well somebody ages and how long you live.

Now, I'm only 33, so you'd think that this wouldn't really apply to me yet,

but we got a golden labrador called Mango about a year ago.

and as his exercise tolerance increased as he got bigger, we had to walk him further and further every single day.

So now we walk him three times a day: morning, afternoon, and evening.

And the changes that I noticed in myself were really hard to ignore.

My legs became noticeably stronger because he lived in such a hilly area.

This is probably the most remarkable thing that I noticed about myself.

And my appetite became much more regular as well.

I'm somebody that craves really sugary foods all the time.

So when I'm telling you that this research is really compelling, I'm also telling you that it matches what I've experienced firsthand.

So in this video, what I'm going to do is walk you through nine things that consistently show up in the research when people walk every single day.

We'll talk about your heart health, your kidneys, your liver, your joints, your muscle, and

And at the end of the video, what I'll do is give you a specific framework for actually implementing all of this, because that's the part that most videos seem to skip over.

And just really quickly before we carry on, only about a quarter of you who watch these videos have actually subscribed to the channel.

So if you find these videos useful, then please, please, please consider subscribing.

It really, really does help an enormous amount.

the evidence here is about as robust as it gets in lifestyle medicine, is that walking has a significant effect on your cardiovascular risk.

but there's a very large meta-analysis published in the European Journal of Preventative Cardiology, which collected data from over 400, 000 people,

and it found that walking was associated with a significant reduction in cardiovascular mortality.

And the dose-response relationship was incredibly clear, meaning that more steps correlated with a lower risk, with the benefits sort of starting to plateau out somewhere between 7,000 and 10,000 steps per day for cardiovascular outcomes specifically.

Now, what's happening physiologically is that regular walking improves your endothelial function, which is the health of the inner lining of your blood vessels.

It seems to be pretty much every video now.

And what that does is that it reduces the stiffness of your arteries.

And all of those things are independent cardiovascular risk factors that walking addresses all at the same time.

The landmark Nurses Health study, which followed over 72,000 women over eight years, found that those who walked briskly for at least three hours per week had a 35% lower risk of a heart attack compared to people who didn't walk, people who were sedentary.

Now, that is a staggering reduction from something as simple as walking.

Now, number two is all about your blood pressure,

and this one deserves its own section because hypertension, high blood pressure, is one of the most common conditions that we see in emergency medicine every single day.

I would say that probably over half of the people that I see have a blood pressure over 140 systolic,

and that is getting into pretty dangerous territory there.

And the reason it's so important is because it damages your blood vessels silently over years,

and it's a major driver of heart attacks and strokes and kidney disease.

And walking done consistently has a really meaningful effect on it.

There was a really big study published in the Journal of Hypertension,

and it was looking at these types of walking interventions in different groups of people.

And it found average reductions of around 3 to 4 millimeters of mercury, which is the unit of blood pressure, in systolic blood pressure, which is the top number, from regular walking programs.

but in population terms, a three-point reduction in your average systolic blood pressure is associated with massive reduced rates of stroke and heart attacks.

And for people with stage one hypertension, so below 140 systolic, that kind of reduction from lifestyle alone can sometimes be enough to avoid medication or at least delay it for a few years.

Moving on to number three, which is that your blood sugar regulation improves massively.

So every time you walk, your contracting leg muscles take up glucose from the bloodstream through a pathway that is partially independent of insulin.

You don't need insulin to be working perfectly for this to happen.

The muscle contraction itself drives glucose into the muscle cells, which means that walking after meals specifically is one of the most effective ways to blunt the post-meal glucose spike that would otherwise occur.

Now, there was a study published in Diabetes Care which found that three 15-minute walks after meals reduced your 24-hour blood glucose levels more effectively than a single 45-minute walk taken at another point in the day.

and this is something that we suggest all the time to our patients.

And for people who are insulin resistant or prediabetic or trying to manage type 2 diabetes, and

what we know is that 40% of you watching this will be in that sort of broad category, this is not a minor finding.

It is genuinely a really powerful tool that costs nothing and has zero side effects.

Consistently lower meal glucose means lower average insulin levels, less glycation damage to blood vessels, and

over time, a really meaningful reduction in the metabolic drivers of chronic disease.

Number four is all about your kidney health now.

And from what I can gather, a lot of you watching these videos are really interested in the health of your kidneys, which is fantastic.

So there was a big study that followed over 6, 000 people with chronic kidney disease,

and it found that those who walked regularly had a significantly lower risk of progression to kidney failure compared to those who were sedentary, who didn't walk, even after controlling for all of the other important variables.

And there are lots of different mechanisms at play here.

So what we know is that regular walking reduces your blood pressure, which directly reduces the filtration pressure inside the glomerulus, which is the tiny sort of filtering units in the kidney.

And that reduced pressure slows the rates of kidney damage over time.

Walking also improves your insulin sensitivity and reduces your blood sugar, which, as I just covered in the previous section, is one of the major drivers of kidney damage.

And it reduces systemic inflammation as well, which is another independent driver of kidney disease progression.

Now, the benefits here are largely indirect.

They come through improvements in blood pressure, blood sugar, and

inflammation, but they are absolutely real, and they have been tested again and again.

So just check out the research papers in the description if you want to learn more.

Number five is all about your liver this time.

So non-alcoholic fatty liver disease is one of the most common liver conditions in the developed world, perhaps the most common.

And it affects probably around 25 to 30% of adults.

And most people who have it will never know.

It develops when fat accumulates in the liver cells, initially causing no symptoms at all,

but potentially progressing over years to inflammation and scarring,

and then possibly causing some pain later down the line.

Eventually, it can even cause cirrhosis and liver failure.

And one of the most effective interventions for it, backed by years and years of research, is regular aerobic exercise, including just plain boring walking.

There was a systematic review published in the Journal of Hepatology, which is a pretty important journal all about the liver,

and it found that exercise interventions, including moderate-intensity walking, significantly reduced the amount of liver fat, even in the absence of significant weight loss.