StayCurious Metabolism

StayCurious Metabolism

The Peptide That Mimics Exercise… I’m Testing It

A mitochondrial peptide that mimics exercise? The data are surprising. I went down the rabbit hole—and now I’m testing it myself. Here’s what the science says, and what I’m about to try.

Nick Norwitz MD PhD's avatar
Nick Norwitz MD PhD
May 09, 2026
∙ Paid
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If you’re anything like me, you’ve probably developed a reflexive skepticism toward strong health claims on social media.

Eat this superfood and erase brain fog.

Use this peptide stack and drop from 30% body fat to 10% in 90 days.

Rub this rare Amazonian plant butter on your kneecaps and become an Olympic sprinter.

Okay. That last one I made up.

But in all seriousness, social media has become a game of extreme-claim leapfrog, with influencers trying to outdo each other to feed an algorithm.

But let me level with you—this is where I struggle… I sit at the intersection of being a content creator and an open-minded scientist. And, sometimes, the extreme claims hold a nugget of truth.

The people who sound like raving lunatics might actually be circling something real—something conventional science is sluggishly beginning to understand. And identifying those pockets of possibility is, I suppose, my job.

Today, I want to talk to you about a mitochondrial hormone and peptide (MOTS-c) that may have real potential to influence physical performance, body composition, and even healthspan.

Oh, and one last item before begin… I should disclose: I’m about to try it myself.

Premium subscribers get full access to my deep dives into cutting-edge metabolic research for less than $1/letter, 3 per week. You’ll always walk away with at least one new insight about metabolic health.

Today’s StayCurious Metabolism letter is for premium members. We’re going deep on a peptide that might actually live up to the hype, and beyond. Inside, we’ll cover:

  • Your Two Genomes: The biological foundation to understand to logic of this peptide

  • How to Increase MOTS-c Naturally (Human Data)

  • Performance and Body Composition: Strength, Stamina, Fat loss and Muscle preservation, and exercise performance (Preclinical Data)

  • My dosing protocol: The one I’m planning to use, and what I expect to see

  • Real-world stacking strategies, including how people are combining MOTS-c with another peptides for fat loss and body recomposition

  • The Medical Promises of MOTS-c: Future directions for chronic diseases

If you haven’t yet made the jump to premium, now’s the time. Join a community of authentically curious people—and I promise, your mitochondria will thank you.

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