Your Mitochondria Are Aging — Here's How to Slow Them Down

Okay, Drew — what if I told you ten percent of your body weight is basically ancient bacteria?

I'd say that explains a lot about Mondays. Those are your mitochondria — your cells' power plants — and they're older than animals.

And they're connected to why we age? Like directly?

Pretty directly. Here's the actual biology: inside each mitochondrion there's the electron transport chain — protein pumps that push charged particles across a membrane, building up electrical pressure. That pressure is called mitochondrial membrane potential, and it's how your cells make energy.

So it's like a dam, but tiny and inside me.

Inside billions of yous, yes. And as you age, that pressure drops. The pumps leak. Energy output falls. Cells start misbehaving, or just quietly give up.

That sounds bad. Is there actually anything we can do?

Genuinely yes. Exercise is the biggest lever — specifically cardio, because it forces your cells to make new mitochondria. Not metaphorically. Literally more of them.

What about supplements? Because my cabinet looks like a GNC exploded.

Two with decent evidence: CoQ10 — it's a molecule your mitochondria actually use in those pumps — and NAD precursors like NMN or NR, which help restore a signaling compound called NAD+ that drops with age and slows the whole system down.

Do they actually work or is this wishful thinking?

Evidence is promising, not proven in humans long-term. Take that seriously. Also sauna — repeated heat stress genuinely triggers mitochondrial repair pathways. The research on that is surprisingly solid.

I feel like sauna is the answer to everything now.

It is NOT the answer to everything. But it helps here. Cold exposure has some signal too. Sleep is underrated — mitochondrial cleanup happens mostly at night.

So what's the one thing someone should actually do Monday morning?

Go for a brisk thirty-minute walk. It's not glamorous, but consistent aerobic movement is the most evidence-backed way to keep your cellular power plants from quietly rusting out.