the benefits of weighted slow running for endurance
the benefits of weighted
running for endurance
the benefits of
weighted running for
endurance
the benefits of weighted
running for endurance
june 17th 2026, natural resistance
june 17th 2026, natural resistance
FORM breakdown IS THE
SILENT PERFORMANCE killer
FORM breakdown IS THE
SILENT PERFORMANCE killer
FORM breakdown IS THE SILENT PERFORMANCE killer
FORM breakdown IS THE
SILENT PERFORMANCE killer
The ability to keep moving well when fatigued is one of the most important parts in endurance performance.
Natural Resistance helps you develop fatigue-resistant movement mechanics, by securing form, posture, and force production long after others begin to break down.
The ability to keep moving well when fatigued is one of the most important parts in endurance performance.
Natural Resistance helps you develop fatigue-resistant movement mechanics, by securing form, posture, and force production long after others begin to break down.
because of what you're (not) wearing
YOU’re losing out on:
YOU’re losing out on:
%
more work
%
more work capacity
%
more work
%
BETTER RUNNING ECONOMY
%
BETTER RUNNING ECONOMY
%
BETTER RUNNING ECONOMY
%
INCREASED ENDURANCE
%
INCREASED ENDURANCE
%
INCREASED ENDURANCE
%
WORK CAPACITY
bodyweight % increase = increase
work capacity %
%
BETTER RUNNING ECONOMY
%
INCREASED ENDURANCE
02. Sidik & Rosdiana, International Journal of Human Movement and Sports Sciences (2022)/ Barnes et al., Journal of Science and Medicine in Sport (2015) - 03. Elsyam et al., Journal of Sport and Exercise Science (2025)
02.. Sidik & Rosdiana, International Journal of Human Movement and Sports Sciences (2022)/Barnes et al., Journal of Science and Medicine in Sport (2015)
03. Elsyam et al., Journal of Sport and Exercise Science (2025)
02. Sidik & Rosdiana, International Journal of Human Movement and Sports Sciences (2022)/ Barnes et al., Journal of Science and Medicine in Sport (2015) - 03. Elsyam et al., Journal of Sport and Exercise Science (2025)
more output, faster
more output, faster
more output, faster
Training with extra weight raises the cost of every movement, and simulates running in a fatigue-induced environment.
With consistent training, your body naturally adapts to the increased demands of the extra weight.
When you finally run without it, you will be able to produce more work, faster, and longer, delaying the onset of fatigue and improving your performance.
Training with extra weight raises the cost of every movement, and simulates running in a fatigue-induced environment.
With consistent training, your body naturally adapts to the increased demands of the extra weight.
When you finally run without it, you will be able to produce more work, faster, and longer, delaying the onset of fatigue and improving your performance.
Training with extra weight raises the cost of every movement, and simulates running in a fatigue-induced environment.
With consistent training, your body naturally adapts to the increased demands of the extra weight.
When you finally run without it, you will be able to produce more work, faster, and longer, delaying the onset of fatigue and improving your performance.
NO. 1 HEAVIEST
FABRIC IN THE WORLD
NO. 1 HEAVIEST
FABRIC IN THE WORLD
NO. 1 HEAVIEST
FABRIC IN THE WORLD
The smartest weighted garments for any endurance runner.
The smartest weighted garments for any endurance runner.
Connect to Content
Add layers or components to swipe between.
Connect to Content
Add layers or components to swipe between.
Raise your running performance baseline
Raise your running performance baseline
Raise your running performance baseline
The specific body adaptation of training with weight is not that you get more efficient at carrying extra weight, it is that you get more efficient at carrying your own bodyweight.
Training under additional load develops more efficient movement mechanics and fatigue resistance. When the weight comes off, you’re able to maintain form, posture and force production when it really matters.
The specific body adaptation of training with weight is not that you get more efficient at carrying extra weight, it is that you get more efficient at carrying your own bodyweight.
Training under additional load develops more efficient movement mechanics and fatigue resistance. When the weight comes off, you’re able to maintain form, posture and force production when it really matters.
Fatigue Resistance
Your ability to maintain efficiencient movement when fatigued.
Mechanical efficiency
More efficient, powerfull movement at your natural bodyweight
feel the difference WITH
feel the difference WITH
WEIGHTED COMPRESSION
WEIGHTED COMPRESSION
WEIGHTED COMPRESSION
WEIGHTED COMPRESSION
Built-in compression. More than just weight.
Natural Resistance combines the best of both worlds.
Built-in compression. More than just weight. Natural Resistance combines load with compression.
Built-in compression. More than just weight.
Natural Resistance combines the best of both worlds.
1.5 MM THIN
The world's thinnest, heaviest fabric.
super flexiblE
4-way, super elastic stretch.
butter SOFT
No hard plates or inserts.
tight fit
Secure, evenly-disributed compression.
1.5 MM THIN
The world's thinnest, heaviest fabric.
super flexiblE
4-way, super elastic stretch.
butter SOFT
No hard plates or inserts.
tight fit
Secure, evenly-disributed compression.
1.5 MM THIN
The world's thinnest, heaviest fabric.
super flexiblE
4-way, super elastic stretch.
butter SOFT
No hard plates or inserts.
tight fit
Secure, evenly-disributed compression.
THE RESULT
THE RESULT
THE RESULT
PERFORMANCE THAT LASTS
PERFORMANCE THAT LASTS
PERFORMANCE
THAT LASTS
PERFORMANCE THAT LASTS
STAY STRONGER FOR LONGER
Feel lighter during racing
PREVENT FORM BREAKDOWN
RECOVER FASTER
STAY STRONGER FOR LONGER
Feel lighter during racing
PREVENT FORM BREAKDOWN
RECOVER FASTER
STAY STRONGER FOR LONGER
Feel lighter during racing
PREVENT FORM BREAKDOWN
RECOVER FASTER
STAY STRONGER FOR LONGER
Feel lighter during racing
PREVENT FORM BREAKDOWN
RECOVER FASTER
CHOOSE YOUR RESISTANCE
Shop the garments our athletes love.
Build a more resilient running body (muscles, tendons, bones and connective tissue)
Increase training efficiency (more results in the same or even less time)
Show off the latest innovation in fitness
Free delivery
90 days hassle-free returns
4 years of research
Connect to Content
Add layers or components to swipe between.
Free delivery
90 days hassle-free returns
4 years of research
CHOOSE YOUR
RESISTANCE
CHOOSE YOUR
RESISTANCE
Build a more resilient running body (muscles, tendons, bones and connective tissue)
Build a more resilient running body (muscles, tendons, bones and connective tissue)
Increase training efficiency (more results in the same or even less time)
Increase training efficiency (more results in the same or even less time)
Show off the latest innovation in fitness
Show off the latest innovation in fitness
Free delivery
Free delivery
90 days hassle-free returns
90 days hassle-free returns
4 years of research
4 years of research
4 years of research
HOW IT WORKS
HOW IT WORKS
HOW IT WORKS
Easy
Practical
Non-intrusive
Soft & Stretchy
USE IT ANYWHERE, ANYTIME, ANYHOW
Wear it as a full replacement or in combination with your current sportswear.
perform your workout as normal
The easiest and most simple way to improve your performance
and recovery without changing what you already do.
The easiest and most simple way to improve your performance and recovery without changing what you already do.
compete light like a feather
Your secret weapon on race day. Level up your baseline and
feel strong, fast and light on your feet when you compete.
Your secret weapon on race day. Level up your baseline and feel strong, fast and light on your feet when you compete.
Don’t Let Fatigue Decide
Your Race
Track & Field
Create the muscular endurance needed to beat leg muscle fatigue. Stay powerful
through every workout, and maintain your output after each station when others begin to fade.
BE THE RUNNER WHO DOESN’T FADE
CITY/ROAD RUNNERS
Stay fast when your legs normally slow down. Build the muscle endurance needed to maintain speed to outperform your competition.
TRAIN FOR THE TRAIL. ANYWHERE.
TRAIL RUNNERS
Prepare your legs for the trail while training in the city. Build the muscular endurance for long climbs and distances. When the weight comes off, you’ll stay lighter, faster and stronger deep into the trail.
HOLD YOUR SPEED.
LAP AFTER LAP.
Track & Field
Build the muscular endurance needed to maintain speed lap after lap. Stay powerful when fatigue starts to build and finish stronger when the race is on the line.
BE THE RUNNER WHO DOESN’T FADE
CITY/ROAD RUNNERS
Stay fast when your legs normally slow down. Build the muscle endurance needed to maintain speed to outperform your competition.
TRAIN FOR THE TRAIL. ANYWHERE.
TRAIL RUNNERS
Prepare your legs for the trail while training in the city. Build the muscular endurance for long climbs and distances. When the weight comes off, you’ll stay lighter, faster and stronger deep into the trail.
HOLD YOUR SPEED.
LAP AFTER LAP.
Track
Build the muscular endurance needed to maintain speed lap after lap. Stay powerful when fatigue starts to build and finish stronger when the race is on the line.
BE THE RUNNER WHO DOESN’T FADE.
ROAD RUNNERS
Don’t Let Fatigue pull you down.
FITNESS RUNNERS
HYBRID ATHLETESHOLD YOUR SPEED. LAP AFTER LAP.
Track runners
TRAIN FOR THE TRAIL. ANYWHERE.
TRAIL RUNNERS
Our social running
Community
Community
run together - The perfect gift
Natural Resistance enables people of different fitness levels to run together
under the same conditions while working at their optimal intensity.
Now you can finally run with your friend, partner, or colleague without compromising on your progress!
run together - The perfect gift
Natural Resistance enables people of different fitness levels to run together under the same conditions while working at their optimal intensity.
Now you can finally run with that friend, partner, or colleague without compromising on your progress!
Don’t just take
our word for it.
I'm really excited that I received the garments and was able to use them for training. it is super impressive, I was really mind-blown.
I am also interested in trying the calf sleeves so I will plan on ordering those as well.
Thank you so much for your help, and congratulations on such a cool product. I am really excited to continue using it when I'm training.
Daniela
Verified Buyer
We are really happy with the sports bras so far! They feel very comfortable to wear, and we barely notice them during the sessions, which is impressive considering how much more weight we are wearing.
We have only tried them 3-4 times so far, but we are looking forward to testing them more.
We will get back to you with more detailed feedback once we’ve have tested more.
Pia and Nora
Verified Buyer
We are really pleased with the shirts that you made us. This fit is great and they are exactly what we are looking for. We have used them for the past 2 weeks of training.
We couldn’t be happier!
Trevor
Verified Buyer
Now I’ve received the shorts and wow, what a material! I recorded an audio file with my thoughts when I opened the package and tried them on for the first time.
It really feels like there’s great potential in this material.
Viktor
Verified Buyer
I used them for a few days before the holidays and it was easy to forget they were there after a few minutes, only after I removing them I truly felt the change.
Breathable and slightly tight atm I am happy with my purchase.
Christian
Verified Buyer
Don’t just take
our word for it.
I'm really excited that I received the garments and was able to use them for training. it is super impressive, I was really mind-blown.
I am also interested in trying the calf sleeves so I will plan on ordering those as well.
Thank you so much for your help, and congratulations on such a cool product. I am really excited to continue using it when I'm training.
Daniela
Verified Buyer
We are really happy with the sports bras so far! They feel very comfortable to wear, and we barely notice them during the sessions, which is impressive considering how much more weight we are wearing.
We have only tried them 3-4 times so far, but we are looking forward to testing them more.
We will get back to you with more detailed feedback once we’ve have tested more.
Pia and Nora
Verified Buyer
We are really pleased with the shirts that you made us. This fit is great and they are exactly what we are looking for. We have used them for the past 2 weeks of training.
We couldn’t be happier!
Trevor
Verified Buyer
Now I’ve received the shorts and wow, what a material! I recorded an audio file with my thoughts when I opened the package and tried them on for the first time.
It really feels like there’s great potential in this material.
Viktor
Verified Buyer
I used them for a few days before the holidays and it was easy to forget they were there after a few minutes, only after I removing them I truly felt the change.
Breathable and slightly tight atm I am happy with my purchase.
Christian
Verified Buyer
Don’t just take
our word for it.
I'm really excited that I received the garments and was able to use them for training. it is super impressive, I was really mind-blown.
I am also interested in trying the calf sleeves so I will plan on ordering those as well.
Thank you so much for your help, and congratulations on such a cool product. I am really excited to continue using it when I'm training.
Daniela
Verified Buyer
We are really happy with the sports bras so far! They feel very comfortable to wear, and we barely notice them during the sessions, which is impressive considering how much more weight we are wearing.
We have only tried them 3-4 times so far, but we are looking forward to testing them more.
We will get back to you with more detailed feedback once we’ve have tested more.
Pia and Nora
Verified Buyer
We are really pleased with the shirts that you made us. This fit is great and they are exactly what we are looking for. We have used them for the past 2 weeks of training.
We couldn’t be happier!
Trevor
Verified Buyer
Now I’ve received the shorts and wow, what a material! I recorded an audio file with my thoughts when I opened the package and tried them on for the first time.
It really feels like there’s great potential in this material.
Viktor
Verified Buyer
I used them for a few days before the holidays and it was easy to forget they were there after a few minutes, only after removing them I truly felt the change.
Breathable and slightly tight atm I am happy with my purchase.
Christian
Verified Buyer
Don’t just take
our word for it.
I'm really excited that I received the garments and was able to use them for training. it is super impressive, I was really mind-blown.
I am also interested in trying the calf sleeves so I will plan on ordering those as well.
Thank you so much for your help, and congratulations on such a cool product. I am really excited to continue using it when I'm training.
Daniela
Verified Buyer
We are really happy with the sports bras so far! They feel very comfortable to wear, and we barely notice them during the sessions, which is impressive considering how much more weight we are wearing.
We have only tried them 3-4 times so far, but we are looking forward to testing them more.
We will get back to you with more detailed feedback once we’ve have tested more.
Pia and Nora
Verified Buyer
We are really pleased with the shirts that you made us. This fit is great and they are exactly what we are looking for. We have used them for the past 2 weeks of training.
We couldn’t be happier!
Trevor
Verified Buyer
Now I’ve received the shorts and wow, what a material! I recorded an audio file with my thoughts when I opened the package and tried them on for the first time.
It really feels like there’s great potential in this material.
Viktor
Verified Buyer
I used them for a few days before the holidays and it was easy to forget they were there after a few minutes, only after I removing them I truly felt the change.
Breathable and slightly tight atm I am happy with my purchase.
Christian
Verified Buyer
The ultimate
running apparel
The ultimate
running apparel
The ultimate
running apparel
Greater lower body muscular endurance
Greater lower body muscular endurance
Stronger mechanical base development
Stronger mechanical base development
More productive Zone-2 training
More productive Zone-2 training
Simulates demanding running conditions while fatigued
Simulates demanding running conditions while fatigued
BUY NOW
BUY NOW
Free delivery
2 year warranty
4 years of research
90 days hassle-free returns
Free delivery
Free delivery
Free delivery
2 year warranty
2 year warranty
2 year warranty
4 years of research
4 years of research
4 years of research
90 days hassle-free returns
90 days hassle-free returns
90 days hassle-free returns
CHOOSE YOUR GARMENT
CHOOSE YOUR GARMENT
WEIGHTED HYBRID SHORTS
WEIGHTED HYBRID SHORTS
The ultimate mix of weight, breathability and flexibility, with strategic weight placement and regular sports fabric where it matters most.
Most versatile item
Most versatile item
Optimized for breathability
Optimized for breathability
Slight compression
Slight compression
SHOP HYBRID SHORTS
WEIGHTED HYBRID SHORTS
The ultimate mix of weight, breathability and flexibility, with strategic weight placement and regular sports fabric where it matters most.
Most versatile weighted garment
High weight
Optimized breathability
SHOP HYBRID SHORTS
WEIGHTED FOREARM SLEEVES
WEIGHTED FOREARM SLEEVES
Engineered to activate shoulders and biceps while transferring force down throughout the rest of the body with precision-distributed natural resistance.
Targets deltoids & biceps
Targets deltoids & biceps
Even weight distribution
Even weight distribution
Secure fit
Secure fit
CHOOSE YOUR GARMENT
WEIGHTED FOREARM SLEEVES
The perfect set for runners combining both the weighted hybrid shorts and forearm for optimal resistance.
Bundle deal
Optimized for increase of resistance
Ideal compression
SHOP RUNNING BUNDLE
WEIGHTED HYBRID SHORTS
Dedicated to the ultimate mix of weight, breathability and flexibility, with strategic weight placement and regular sports fabric where it matters most.
Most versatile weighted garment
Optimized for breathability
Ideal compression
SHOP HYBRID SHORTS
WEIGHTED FOREARM SLEEVES
Engineered to activate shoulders and biceps while transferring force down throughout the rest of the body with precision-distributed natural resistance.
Especially trains deltoids & bicep
Secure fit
Even weight distribution
SHOP SLEEVES
©Natural Resistance 2026 All Rights Reserved
©Natural Resistance 2026 All Rights Reserved