Chris Masterjohn

Yeah.

And...

Exercise is a very interesting one.

So exercise is incredibly important to the signaling that produce mitochondria.

But why is that?

It's because you need mitochondria to produce energy for the exercise that you're doing.

So I think a lot of people are too reductionist when they look at what type of exercise should you do for your mitochondria.

If you try to do a study that says like, I'm trying to get more mitochondria in my skeletal muscle, what exercise gonna do it?

You're gonna see endurance exercise outperforming other things.

And that's because endurance activity requires more mitochondrial function in the muscle.

If you're doing like hypertrophy or strength training and you're doing short sets,

your muscle's burning a lot of glycogen, it's less dependent on its mitochondria, so you're not gonna see the mitochondrial function there.

But that doesn't mean you're not improving mitochondrial function, because now all that really means is the liver is stepping up to assist the muscle.

Like if you're doing sprinting, your muscle's burning through tons of carbohydrates, making a lot of lactate.

If that lactate's not being metabolized in the skeletal muscle, it's going to the liver to get converted back to glucose.

So now you're training your liver's mitochondria.

When you're doing strength training, you're doing hypertrophy.

So I think the right way to look at it is just you should be exercising all the things that are functions that you need to keep.

And that means endurance.

It means strength.