Your Body Still Thinks You're Nomadic

Hi {{ first name | there}},

I’m writing this from Bangkok – and it made this week’s story obvious.

But first, last week’s poll.

We asked what quietly gets in the way of your oral-health routine – and the answers were very telling:

31% said dry mouth / mouth breathing is probably part of the problem.
28% said their gums bleed sometimes, and they mostly ignore it.
18% said they are overdue for a cleaning.
15% said they brush, but do not clean between the teeth consistently.
And 8% pointed to acidic drinks / late snacking as the routine-wrecker.

What stood out to me: most of these are not really “discipline” problems.

They are environment problems.
Breathing patterns. Sleep setup. Food timing. Daily routines. The small norms that quietly shape your biology before you even think about “health.”

And that is actually the perfect bridge into this week’s issue.

I arrived in Bangkok last Tuesday – and it made the main story feel much less abstract.

Bangkok is heat, movement, street life, massage shops, hospitals, wellness clinics, recovery spaces, medical tourism, rooftop gyms, night markets, laptop workers, and people moving through the city at every hour. It is chaotic, modern, ancient, optimized, messy, and alive.

And yes – I probably have to admit that I am a bit of a digital nomad myself.

I work from wherever I am. I build from a laptop. I spend a lot of time between places, cities, airports, routines, and health experiments.

That phrase – “digital nomad” – often gets reduced to a cliché.

Tax avoidance. Laptop-on-the-beach photos. People trying to escape “real life.”

But maybe that is too shallow.

Maybe the digital nomad is not just a tax stereotype or laptop cliché.

Maybe it is the modern expression of something much older: the human pull toward movement, novelty, independence, sunlight, social density, and changing environments.

At the end of the day, biologically, humans were never really designed to be houseplants.

For most of our history, movement was not “exercise.”
It was the standard.

Walking, carrying, searching, climbing, foraging, sweating, exploring, adapting.

Modern life changed the environment almost overnight.
Chairs. Cars. Screens. Offices. Delivery apps. Climate control. Fixed routines. Endless sitting.

But your body did not get the software update.

Your metabolism still responds to movement.
Your muscles still act like glucose sinks.
Your brain still craves novelty.
Your nervous system still reacts to environment.
And your biology may still expect a more mobile life than modern culture allows.

So this week, we are going into one of the biggest hidden mismatches in modern health:

Your Body Still Thinks You’re Nomadic

Why sedentary life feels normal now – but still clashes with the biology you inherited.

And why the answer is not necessarily to quit your job, sell everything, and move to Bangkok.

It is to understand which nomadic signals your body still needs – and how to rebuild them into modern life.

Evidence-first health, built for real life – wherever you are.

Biologically speaking, humans are built for the road.

But modern life has spent the last few thousand years trying to convince us we are houseplants.

We sit in fixed rooms, work at fixed desks, stare at fixed screens, eat food we did not hunt, commute without walking, and recover without ever really changing environment.

It feels normal now.

But your body may not agree.

If you zoom out, the human story is not a story of chairs, offices, cars, and climate-controlled stillness.

It is a story of movement.

Anatomically modern Homo sapiens emerged roughly 300,000 years ago. Agriculture and settled life arrived only around the last 10,000–12,000 years.

In evolutionary terms, that is a blink.

For most of our history, humans lived as mobile hunter-gatherers: walking, carrying, tracking, climbing, foraging, scanning, adapting, and moving through heat, light, terrain, hunger, social contact, and changing surroundings.

Movement was not a wellness habit.

It was the normal setting.

That is the first mismatch:

Modern life made movement optional. Human biology was shaped when movement was unavoidable.

This is not just a romantic evolutionary story.

You can still see the nomadic blueprint in the body.

Humans are unusually good at endurance movement. We are not the fastest sprinters or the strongest mammals, but we are built to keep going. The classic endurance-running hypothesis argues that humans evolved anatomical and physiological traits that made sustained long-distance running unusually important in the evolution of the genus Homo.

Think about the hardware: efficient sweating, relatively little fur, upright walking, arched feet, elastic tendons, and a body that can dump heat while moving.

These are not the design features of a creature built to sit still all day.

Modern hunter-gatherer populations also show how different a movement-rich human baseline can look. Studies of the Hadza, for example, report roughly 15,800 steps per day, about 9–15 km of daily walking, and around 135 minutes per day of moderate-to-vigorous physical activity.

That does not mean we should romanticize hunter-gatherer life.

It means we should notice the gap.

Your body was shaped in a world where movement was not scheduled into a workout app.

It was distributed across the entire day.

Then modern life arrived.

Chairs, cars, screens, desks, elevators, delivery apps, climate control, artificial light, fixed routines, and long indoor days.

Suddenly, the human body was placed into an environment where the old survival signals disappeared.

You no longer need to walk to get food.
You no longer need to carry much.
You no longer need to climb, squat, forage, track, scan, or move across terrain.

The body that was shaped for motion now lives in stillness.

That is evolutionary mismatch.

Not that modern life is evil. Modern life is extraordinary.

But culture changed faster than biology.

Your calendar became modern. Your muscles did not. Your metabolism did not. Your joints did not. Your nervous system did not.

And this is why the issue is not only that we “exercise too little.”

The deeper problem is that we have compressed movement into a tiny fitness category while deleting it from the rest of the day.

Movement is not just calorie burn.

It is metabolic information.

This is where the recent evidence makes the evolutionary story practical.

A 2025 systematic review and meta-analysis in Frontiers in Nutrition looked at “exercise snacks” – short bouts of activity used to interrupt prolonged sitting – and found that these brief interruptions can improve post-meal glucose and insulin responses in adults with obesity.

In plain English:

Your muscles are not just there for workouts.

They are part of your fuel-clearing system.

When you eat and then sit for hours, you are asking your metabolism to process incoming fuel while one of its biggest disposal systems stays mostly offline.

But when you walk after meals, climb stairs, do bodyweight movements, or simply break up sitting, your body gets a different signal:

fuel is being used.

Another recent paper in Physiology & Behavior found that sedentary time was linked to cardiometabolic risk in older adults, but that the relationship became non-significant above certain movement thresholds: at least 19 minutes per day of moderate-to-vigorous activity, around 5.9 hours per day of light activity, or frequent sitting breaks.

That matters as the body does not only respond to “the workout.”

It responds to the pattern of the day: how long you sit, how often you interrupt sitting, how much light movement you accumulate, whether meals are followed by motion or stillness, and whether your muscles get repeated signals to contract.

A 2026 systematic review and meta-analysis in the British Journal of Sports Medicine also found that short “exercise snacks” improved cardiorespiratory fitness in physically inactive adults.

So the lesson is not:

Train harder or fail.

The lesson is:

Stop letting your day become metabolically motionless.

Even the step-count literature points in the same direction. A 2025 Lancet Public Health systematic review and dose-response meta-analysis found that daily steps were associated with multiple health outcomes and suggested that around 7,000 steps per day may be a meaningful, realistic target — not that 7,000 is magic, but the benefits begin well below the over-marketed 10,000-step rule.

And this may not only be about the body.

Researchers have also studied dopamine-related variants such as DRD4-7R, sometimes nicknamed the “wanderlust gene.”

That nickname is too simplistic. There is no single gene that makes someone a nomad.

But the signal is interesting.

One study in Kenyan Ariaal men found that the DRD4/7R allele appeared more advantageous among nomadic men than settled men. Another study found an association between migratory distance and DRD4 2R / 7R alleles.

This does not prove that digital nomads are genetically programmed to travel.

But it does suggest a more interesting possibility:

Some human traits may make more sense in mobile, variable, exploratory environments than in fixed, sedentary ones.

Novelty-seeking. Exploration. Independence. Restlessness. Environmental change.

In the wrong context, those traits can look like distraction.

In the right context, they may be part of the human toolkit.

That is why the digital-nomad stereotype may be too shallow.

Maybe it is not just tax avoidance, laptop-on-the-beach content, or people escaping “real life.”

Maybe, for some people, it is a modern expression of something much older:

the human pull toward movement, novelty, independence, and changing environments.

The answer is not to quit your job, sell everything, and move to Bangkok.

It is not to romanticize nomadic life.

It is not to pretend modern medicine, cities, technology, and stable homes are mistakes.

The answer is to understand what modern life removed.

It removed movement, terrain, carrying, light exposure, variability, exploration, and the natural link between eating and moving.

Then it told us to fix the whole thing with a workout.

But your body may need something more basic:

nomadic signals.

Walk after meals. Break up sitting. Take stairs. Carry things. Get outside. Change your route. Let your body experience motion as a daily rhythm, not a scheduled exception.

Modern culture made stillness normal.

But your biology may still expect motion, variability, load, sunlight, exploration, and repeated muscular work across the day.

Your body still thinks you’re nomadic.

And it may start working better when you give it some of those signals back.

A new analysis from the long-running Dallas health project found that adults with higher cardiorespiratory fitness before age 65 tended to develop major chronic diseases later than less-fit peers. Higher fitness was linked to later onset across conditions including heart disease, diabetes, kidney disease, lung disease, dementia, and cancer. The high-fit group also had fewer diagnoses after 65 and lived longer.
Earth.com

HEALTH HACK take:
This fits perfectly with this week’s issue. Movement is not just about looking fit. It is one of the body’s core healthspan signals. Your biology still expects repeated cardiovascular demand – and midlife fitness may help delay the diseases that make aging feel old.

New research highlighted by Edith Cowan University suggests that eccentric exercise – where muscles work while lengthening – can build strength and size with less perceived effort. Think slowly lowering into a chair, walking downstairs, heel drops, or controlled lowering movements. The article notes that simple home-based eccentric movements have shown meaningful benefits in as little as five minutes a day.
News-Medical

HEALTH HACK take:
This is the anti-excuse strength signal. You do not always need a brutal gym session. Your body also responds to small, repeated, intelligently loaded movements – exactly the kind of “useful movement” modern life quietly removes.

A large study published in Nature analyzed ancient and modern DNA from nearly 16,000 West Eurasian people and found hundreds of gene variants that appear to have been shaped by natural selection over the past 10,000 years. The findings suggest that human evolution did not simply stop when modern humans emerged – and may have accelerated after the shift from hunter-gatherer life to farming.
Smithsonian Magazine

HEALTH HACK take:
This adds nuance to the evolutionary-mismatch story. Yes, humans are still adapting. But culture, technology, chairs, screens, processed food, and climate-controlled indoor life changed so fast that many of our biological systems are still catching up.

A new analysis of 69 previous studies found that 7–8 hours of sleep was associated with the lowest dementia risk. But the paper also flagged two other modifiable behaviors: sitting more than 8 hours per day and doing less than 150 minutes of weekly physical activity were linked to higher dementia risk.
ScienceAlert

HEALTH HACK take:
Brain health is not only about sleep. It is also about the full movement profile of the day. A body that sits too much may also be creating the wrong environment for the brain.

The Apple Watch can already display glucose data through CGM integration, and Dexcom G7 direct-to-watch connectivity is making that more independent from the phone. But the key detail: the watch itself is not directly measuring glucose yet. Apple is still working on non-invasive glucose-tracking technology, but that feature has not been released.
eWeek

HEALTH HACK take:
The future of health tracking is metabolic. But don’t confuse better data display with true non-invasive glucose sensing. For now, the most powerful “glucose hack” is still boring and biological: eat, then move.

💡 Your body does not need you to escape modern life.
It needs you to stop living as if movement, light, load, and exploration were optional upgrades.

This issue was a bit different.

More personal.
More evolutionary.
More "written from the road."

But maybe that is exactly the point.

Health is not only built in clinics, labs, supplements, wearables, or workouts. It is also built in the way your body moves through the world every day – how often you walk, how much light you see, whether your muscles actually get used, whether your environment changes, and whether your day gives your biology the signals it still expects.

Modern life made stillness normal.

But normal is not always biological.

So this week, the challenge is simple:

Add back one nomadic signal.

Walk after your biggest meal.
Break up your longest sitting block.
Take the stairs.
Carry something.
Get outside early.
Choose a different route.
Let your body remember that it was built to move through the world – not just sit inside it.

If you liked this more personal / evolutionary / field-note style, just reply with a 👍.

That helps us know whether to do more issues like this.

Until next time,
Live longer. Upgrade wisely.
Rolf & the HEALTH HACK team

PS: If someone sent you this, you can subscribe here: HEALTH HACK Newsletter

Educational only. Not medical advice. Do not delay care. Consult your clinician for personal decisions – especially around symptoms, diagnostics, supplements, medications, or peptides. Do not self-source peptides.