The Plastic Trap Killing Your Gains (And How to Escape It)

October 17, 2025 | By

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Ever notice some runs feel 10% harder than they should – same pace, same effort, but you’re just… sluggish?

Your plastic water bottle might be part of the problem. Whether you realize it or not, you’re probably drinking chemicals that mess with your recovery every time you take a sip.

In this post, I’m going deep on Microplastics.

They’re everywhere; our water, food, clothes, even the air we breathe. But what’s really happening inside our bodies? How bad is it? And as runners, how do we deal with it without losing our minds?

Listen to audio podcast below on your next run or watch the video above to learn more

What You’ll Learn

  • Why your training might feel harder than it should – and the hidden factor affecting your recovery that most runners ignore
  • How concerned we should realistically be; without the fearmongering, fake news or bro science – just real evidence
  • The simple steps we can take to reduce our exposure

What’s Really Happening: The Science of Microplastics

Way back in 1967 an amazing movie came out called “The Graduate“

There is a scene where the main actor Dustin Hoffman is at a party talking to a business man near the pool. The guy says to Dustin Hoffman that he’s got one word… ‘Plastics… there is a great future is in plastics’?

Well, turns out almost 60 years later he was right—just not in the way anyone expected. Now plastic literally is our future… and our present… and it’s everywhere including our bodies.

What Are Microplastics?

They are very tiny almost invisible plastic particles, smaller than the width of a human hair.

They come from larger plastic items that break down over time, like bottles, packaging, and yes, your favorite running shorts, shirts, socks and shoes.

Here’s where it gets a bit crazy:

  • One study found that bottled water contains up to 100 times more microplastics than tap water.
  • And According to research from the University of Newcastle, microplastics have been found in human lungs, bloodstream, brain and even placentas.
  • However, the widely-reported claim from that same study that we consume ‘a credit card’s worth of plastic weekly’ has been thoroughly debunked by multiple scientists and fact-checkers as a severe overestimate based on flawed methodology.
  • Wageningen University researchers found people consume “at most the mass of a few milligrams a day” – meaning it would take 25,000 years to consume a credit card’s worth. The real number is likely more than 1,000 times smaller than the viral claim suggests. See Mythbusters fact credit card here.
  • They are also being washed out of our clothes, and running gear is some of the worst because it’s made of elastic which is just plastic that wraps around your body in a comfortable way.

But what does that actually mean for your body?

Here’s what we actually know about microplastics and health: Studies from Harvard Medical School and other institutions show that microplastic particles can cause inflammation, cell death, and DNA damage in laboratory settings.

Research also shows that plastic additives like BPA can trigger inflammatory responses in the brain and disrupt hormone signaling pathways.

For runners, this translates to slower recovery between workouts, training zones that feel off, and that frustrating plateau where everything just feels harder than it used to.

The World Health Organization currently states there’s ‘limited evidence’ that microplastics cause significant health problems in humans.

And you might be like “Why is the science so unclear and vague on this? Just tell me if it’s bad or good?!”

The reason is that there’s a challenge with microplastic research: scientists can’t ethically feed people plastic particles to see what happens. So most studies are observational—tracking large populations over time to spot patterns. That takes decades, which is why the science feels so unclear right now.

What matters most for runners?

The chemicals attached to the plastic particles (like BPA and phthalates) are proven endocrine disruptors that can affect recovery and metabolism.

Studies have shown plasticizers can leach from fabrics with heat and friction, exactly what happens on a sweaty run.

So here’s the thing – if you’ve been wondering why your easy runs don’t feel easy anymore, or why you’re not bouncing back like you used to, this invisible inflammation could be the missing piece. Your body is working overtime to deal with these endocrine disruptors while you’re trying to recover from training. But here’s the good news: there are simple fixes that can get you back to feeling strong. You don’t need to throw out your entire gear closet or live in a bubble – just a few strategic swaps that target the biggest sources.

What We Can Do: Practical Steps for Runners

We can focus on 4 things:

  • The Gear We Wear
  • Smartwatch Bands & Wearables
  • Water Bottles & Food Containers
  • Sweat it out

1. The Gear We Wear

“Runners don’t need new gear; they need gear that doesn’t poison their progress.”

Most running clothes are made from polyester, nylon, and spandex; basically plastic in stretchy form. These fabrics shed microfibers, especially during washing, wearing and friction.

What to do:

For running clothing:

  • Merino wool base layers: Smartwool Merino 150 ($70-90 USD)
  • Washing protection: Guppyfriend Washing Bag ($35 USD) or Cora Ball ($38 USD) – both catch 80%+ of microfibers
  • Alternative fabrics: Patagonia’s recycled polyester releases 85% fewer microfibers than virgin polyester

For water bottles:

  • Stainless steel: Hydro Flask 21oz or YETI Rambler ($35 USD)
  • Glass with protection: Lifefactory 22oz with silicone sleeve ($25) – not my fav as I have a small kid and I’m in gym locker rooms and pools a lot.
  • What to avoid: Any single-use plastic bottle reused more than once or if you heat things up. Regular BPA free water bottles still have microplastics and phthaltes in them. So.. it’s just marketing.

Why it matters:

Getting rid of a few things here and there can add up and make the difference.

Quick side note: according to research, washing your quick-dry running clothes actually helps slow down microfiber breakdown over time—it’s the brand new gear that sheds the most. So keep wearing your favorite shirts and shorts until you can’t bear the nasty smell anymore.

2. Smartwatch Bands & Wearables

“That wild, funky smell on your wristband isn’t just sweat; it’s plastic breaking down.”

Silicone and plastic bands break down with heat, sweat, and UV exposure. Every long run in the sun speeds up that process.

What to do: • Move to stainless steel, titanium, or recycled fabric bands. • Clean your smartwatch band regularly with water and a microfiber cloth—soap can degrade plastics faster. • Rotate bands if you wear them daily to reduce long-term degradation.

Why it matters:

Heat and sweat speed up the breakdown of plastics on your skin, so that funky smell on your wrist, heart rate monitor, or running gear isn’t just sweat—it’s literally plastic breaking down and releasing chemicals right where you can smell it!

3. Water Bottles & Food Containers

Heat and plastic are a bad combo. Warm liquids cause microplastics to shed into water bottles and gel packets faster.

Hot stuff like soup is not good. Soup cans leak microplastics as they have a lining inside of them. Canned soup has the highest amount of microplastics in it for canned foods.

Might want to stay away from that.

What to do:

  • Use glass or stainless steel bottles for daily hydration.
  • Don’t reuse single-use plastic bottles—those thin plastics degrade quickly.
  • Avoid leaving plastic water bottles in your car, where heat accelerates breakdown.

4. Sweat It Out: Using Heat for Detox

Microplastics themselves may not exit through sweat, but some of the toxic chemicals attached to them—like BPA and phthalates—can.

What to do:

  • Get into a sauna 2-3 times a week for 20–30 minutes if you can.
  • High-intensity workouts that get you sweating also help.
  • Drinking proper amounts of fluids and electrolytes
  • Get on the detox train with sulfur-rich foods like broccoli sprouts (real foods and supplement work well) and cabbage.

Why it matters:

Dr. Andrew Huberman and Dr. Rhonda Patrick both emphasize that sweating helps your body excrete endocrine-disrupting chemicals.

Okay, we’ve got the basics covered. But what happens when we zoom out and look at what the future hold for runners like us?

How Screwed Are We, Really? And What Comes Next

The truth? We don’t know yet—but here’s what we do know.

Focus on the highest impact changes for the least effort. Don’t spend all your time, money, and mental energy trying to eliminate every plastic particle. That’s impossible and will drive you crazy. For runners, the big wins are simple: clean water and reducing the plastic-sweat combo during long runs. These are high-leverage changes that actually matter, not perfectionist rabbit holes that waste your life.

But here’s the context: Scientists haven’t found direct, large-scale evidence of microplastics causing disease in otherwise healthy individuals. As Huberman Labs often points out, environmental factors matter—but so does overall resilience and metabolic health.

The good news? Change is coming:

  • Biodegradable fabrics: Companies are experimenting with algae- and plant-based fibers to replace polyester.
  • Microfiber-capturing tech: New washing machines with built-in filters could soon reduce plastic pollution.
  • Plastic-free packaging: More brands are testing compostable wrappers for energy gels and snacks.

So, are we really screwed? Probably not. But it’s worth paying attention to and living your life as practical as you can.

As Andrew Huberman pointed out, you’d literally have to leave planet Earth to avoid microplastics completely—they’re probably even floating around in space by now. It’s like that moment at the end of Walking Dead season 1 when Rick finds out from the CDC guy that everyone already has the virus. Sobering? Yeah. But also liberating—we’re all in this together, so let’s just focus on the stuff that actually moves the needle.

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