My Performance Edge — Week 14. Your Mitochondria Called. They’d Like Their Energy Back – Kevin Kearns

by Kevin Kearns, contributing writer, exercise and fitness

Why cellular energy may be one of the missing pieces in performance, recovery, and healthy aging

You can have the best training program in the world. You can eat clean. You can take every supplement known to mankind.

But if the tiny power plants inside your cells aren’t functioning efficiently, eventually the lights start flickering. Welcome to the world of the mitochondria.

Most people vaguely remember mitochondria from high-school biology: “The powerhouse of the cell.” Congratulations. You remembered something from biology class. But mitochondria are much more interesting than that—and understanding them gives us another way to look at energy, metabolism, recovery, muscle function, and aging.

First: What Are Mitochondria?

Mitochondria are structures inside most of our cells responsible for converting nutrients into usable cellular energy, primarily in the form of ATP — adenosine triphosphate.

Think of ATP as your body’s biological currency. Walking requires it. Thinking requires it. Your heart beating requires it.

Training requires a lot of it. Recovering from training requires it too.

And tissues with enormous energy requirements—particularly muscle, heart, and brain tissue—depend heavily on healthy mitochondrial function.

But there’s another side to the story. Mitochondria aren’t simply batteries. They’re involved in cellular signaling, oxidative stress, metabolism, inflammation, and programmed cell death.

In other words: They’re running a lot more of the company than their job title suggests.

What Happens As We Age?

Like most biological systems, mitochondrial function can become less efficient with age. Damaged mitochondria can accumulate. Energy production may decline. Oxidative stress can increase.

Our ability to create new, healthy mitochondria—known as mitochondrial biogenesis—can also become impaired. This is one reason researchers are increasingly interested in mitochondrial dysfunction as one of the biological hallmarks associated with aging.

But here’s the part I want everyone over 40 to understand:

Age is not the same thing as inactivity.

I’ve trained people for more than three decades, and I’ve watched people unintentionally accelerate their physical decline because they simply stopped challenging their bodies.

They move less. They lose muscle. Their cardiovascular conditioning drops. Their metabolic health deteriorates. Then they blame their birth certificate.

Your body doesn’t know that you’re 40, 50, 60 or 70  – and therefore supposed to surrender. It responds to the signals you give it.

Exercise Is Still One of Our Most Powerful Mitochondrial Tools

Before anyone starts talking about peptides, supplements or biohacking, we need to talk about the intervention that’s been sitting in front of us the entire time:

Exercise.

Both aerobic exercise and resistance training can create adaptations involving mitochondrial health. Regular physical activity can encourage mitochondrial biogenesis, improve metabolic flexibility and increase the body’s capacity to produce and use energy.

That doesn’t mean everyone needs to train like an MMA fighter. Actually, please don’t. I spent enough years training professional fighters to know that’s probably unnecessary for most accountants.

What it means is:

Lift something.

Walk.

Get your heart rate elevated.

Maintain muscle.

Recover.

And repeat it consistently.

The fundamentals aren’t sexy. They’re just incredibly effective.

Now Peptides Enter the Conversation

This is where mitochondrial medicine becomes fascinating. Scientists are studying several peptides and peptide-related compounds because of their potential effects on mitochondrial function, cellular stress and metabolism.

One of the most interesting is MOTS-c. MOTS-c is a naturally occurring mitochondrial-derived peptide that has attracted research interest for its role in metabolic regulation, cellular stress responses and exercise-related physiology.

Think about that for a moment.

Your mitochondria aren’t simply receiving instructions. They’re potentially sending signals of their own. That changes the way we think about mitochondria completely.

SS-31 / Elamipretide

Another fascinating compound is SS-31, also known as elamipretide. Unlike MOTS-c, SS-31 is a synthetic mitochondria-targeting peptide. It has been investigated for its ability to interact with mitochondrial membranes and potentially improve mitochondrial bioenergetics.

Researchers have studied it in several disease settings involving mitochondrial dysfunction. Importantly, interesting biology does not automatically equal an approved anti-aging treatment. That distinction matters.

Humanin: Another Message From the Mitochondria

Then we have Humanin, another mitochondrial-derived peptide. Humanin has been investigated for potential cytoprotective and metabolic effects and for its relationship with cellular stress and aging. Again, we’re looking at something remarkable:

The mitochondria appear to participate in a sophisticated communication network affecting how cells respond to stress. The powerhouse analogy suddenly seems a little outdated. Maybe they’re more like the power company, emergency management department and communications center combined.

And What About NAD+?

NAD+ isn’t a peptide, but it belongs in this conversation.

Nicotinamide adenine dinucleotide (NAD+) is a molecule involved in cellular energy metabolism and numerous enzymatic processes. NAD+ biology has become an enormous area of longevity research because levels and metabolism can change with age and metabolic stress. But here’s where marketing often gets ahead of science.

Increasing something associated with youthful biology doesn’t automatically make someone biologically younger. Human physiology doesn’t work like filling up the windshield-washer fluid. That’s why research matters.

The Bigger Picture

This newsletter isn’t about telling you that one molecule will make you younger. It won’t.

Healthy aging is a system.

Movement.

Muscle.

Nutrition.

Sleep.

Stress management.

Metabolic health.

Recovery.

And potentially, as the science continues to develop, targeted therapies that interact with specific biological pathways. Peptides become much more interesting when we stop treating them like magic potions and start understanding the biology they’re designed to influence.

My Performance Edge

After more than 35 years in strength and conditioning, martial arts, rehabilitation and human performance, I’ve learned something incredibly simple:

The human body wants a reason to adapt.

Give it movement.

Give it resistance.

Give it recovery.

Give it proper nutrition.

Then let science help us understand the deeper biological mechanisms behind those adaptations. The future of performance and longevity won’t be exercise versus medicine. I believe it will increasingly be about understanding how movement, lifestyle, regenerative medicine and emerging science can work together. Because longevity isn’t simply about adding years to your life. It’s about maintaining enough cellular energy to actually do something with them.

And that is My Performance Edge.

Educational content only. MOTS-c, Humanin and other peptides discussed here may be investigational and are not presented as approved treatments for aging or disease. Elamipretide’s regulatory status and approved indications, where applicable, should be verified with current regulatory sources. Medical therapies should be discussed with an appropriately licensed healthcare professional.

BWK Authentic Edge | RBT North America

#HealthyAging #Mitochondria #Peptides #MyPerformanceEdge

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