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The Joe Rogan Experience

#2420 - Chris Masterjohn

29 Nov 2025

Transcription

Chapter 1: What is the main topic discussed in this episode?

0.031 - 24.94 Joe Rogan

the joe rogan experience train by day joe rogan podcast by night all day Good, how you doing? Very nice to meet you. Nice to meet you as well. I have enjoyed your content online for a few years now, so it's really solid stuff. And I thought, what better day than to bring Chris in, right after everybody fucked up their diet.

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25.761 - 36.456 Chris Masterjohn

Yeah, that's right. Well, I just want to tell Public Health Message that you did not get sleepy because the turkey was high in tryptophan. Yeah, that's weird.

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36.697 - 40.023 Joe Rogan

Isn't that a weird one? That's a weird myth that's persisted for a long time.

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40.063 - 56.093 Chris Masterjohn

I mean, the weirdest thing is the origins of it. Apparently, it came from researchers in the—I'm sorry, not researchers, journalists in the 80s who were trying to come up with a reason to explain why everyone was tired after Thanksgiving meal.

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56.073 - 78.218 Chris Masterjohn

And they just looked as far as, oh, turkey has tryptophan, which is an amino acid that is the precursor to melatonin, which is, you know, you could call it a sleeping chemical. It's what makes you get tired at night. That must be why. But it turns out that, A, turkey's not that high in tryptophan. Like, even whey protein is higher in tryptophan than turkey is.

78.919 - 89.51 Chris Masterjohn

And then, B, tryptophan doesn't make you tired. Yeah, I dare anyone to go out and have just a slice of turkey for breakfast and see if it knocks you out.

90.271 - 101.682 Joe Rogan

It's overeating. It's so obvious. I mean, people are eating tons of stuffing, tons of sides. They're eating so much food. You're gorging. It's a gorging day. Yeah, for sure.

Chapter 2: How does Chris Masterjohn explain the myth of turkey and sleepiness?

101.982 - 128.903 Chris Masterjohn

Yeah, I mean, it's not good. And if you look at a lion in the wild, one thing that you'll notice is that They are on the prowl when they are hungry. They're alert, their bodies revved up, and then they have a feast and they just fall asleep. And the reason is that we're, you know, you even see this in physiology. They call the parasympathetic nervous system the rest and digest system.

0

128.963 - 144.585 Chris Masterjohn

And that's because we are biologically wired to be alert when we need to work to get our food. And then we're wired to, you know, eat that food, feel like we've gotten our fill, we've done what we need to do, and now we can rest and take a sleep.

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145.021 - 162.557 Joe Rogan

Yeah, it's normal. I mean, there's a great video of these lionesses, these female lions after they've hunted and killed and ate all this food. And they're just lying there like this with these enormous bellies, just like, oh, just like your uncle on the couch watching football. Just, oh.

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163.735 - 190.755 Chris Masterjohn

Yeah, and I think one thing that I think we should talk about today is I've been in nutrition research for 21 years, and I think the crowning thesis of my work so far is that we really want to be thinking about mitochondrial function at the root of all health and disease. And so I think an interesting way to see sleep is it's like, why do we have to sleep eight hours a night?

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190.735 - 206.702 Chris Masterjohn

And I think with dreaming, there's obviously other things going on there. But deep sleep, one of the primary things that's happening is you need to give your mitochondria a rest because your mitochondria are what produce all the energy that you need for sleep.

206.682 - 226.193 Chris Masterjohn

for producing everything in your body, for maintaining it, for repairing it, and for distributing it properly and for keeping it going across the lifespan. And so your mitochondria are going to essentially take a nap, take a rest. They don't go off because you die, but they really turn down the volume of the work they're doing. But then you take your metabolic rate way lower than that.

226.173 - 251.244 Chris Masterjohn

And so you can build up the reserves of energy that you had used up the day before. And so that can explain a lot of recent findings that are coming out as well, because there was that recent study where they looked at sleep deprivation with creatine supplementation. And so they randomized people to either drink a placebo drink or drink 20 grams of creatine through the night.

251.645 - 275.175 Chris Masterjohn

And they kept them awake all night, and they had them do brain puzzle quizzes. And when the subjects were getting the 20 grams of creatine, they did way better on the brain puzzles, but they also complained about being tired a lot less. And so the conclusion is creatine is somehow acutely preventing your brain from suffering more. during sleep deprivation.

275.696 - 286.572 Chris Masterjohn

And the rationale there is mitochondria are the powerhouse of the cell or the power plant that's producing the energy. Creatine is like the power grid, and it distributes that energy throughout the cell.

Chapter 3: What role do mitochondria play in health and disease?

772.23 - 792.471 Chris Masterjohn

So some people swear by liposomal glutathione, and if you swear by it, and if it does its thing for you, great. Do you think it's like 10% better? I think the jury is out on whether there might be 10, 20% better value for those things. So if I'm going to take glutathione, I'm just going to take glutathione.

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792.791 - 803.869 Joe Rogan

Got it. Okay. What you're saying about producing your own glutathione, that's the same thing as like vitamin D, right? It's way better when your body produces it. If it does.

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804.45 - 827.472 Chris Masterjohn

I mean, I don't think there's anything wrong with getting vitamin D from food. But you don't – the thing is you do need sunlight, right? So it's – You at least need to get 30 minutes of sunshine in the morning, which is not going to give you vitamin D. And then you need to get 10 or 15 minutes of unprotected sunshine in the afternoon.

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829.155 - 841.135 Chris Masterjohn

You get vitamin D from that, but you get other benefits from it as well. So I wouldn't say that it's necessarily better to get the vitamin D from the sun than from...

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841.115 - 866.025 Chris Masterjohn

vitamin D supplement or from eating fish or from eating cod liver oil but you don't want to you don't want to say well I don't need to go out in the Sun I'm just gonna take vitamin D then you're not gonna get the benefits of the Sun because the Sun gives you other benefits is there anything that you can do say if you live in Seattle and you're in the winter it's just raining constantly is there a tanning bed that gives you some of that

867.794 - 892.187 Chris Masterjohn

Yeah, I do think that there is some risk of tanning beds. I'm not 100% comfortable. When I lived in New York, I would try to spend 40 minutes in the afternoon sunshine for three quarters of the year. And during the winter... the UV index just wasn't high enough. And I get eczema in the winter because I'm not getting enough sun.

Chapter 4: Why is deep sleep important for mitochondrial function?

892.928 - 914.727 Chris Masterjohn

And so I would use a tanning bed not to get tan, but I'd use like two, three minutes at a time just because it just had a systemic effect in preventing the eczema that I would get in the winter. I think you have to be careful with it because there is some concern that people are just, if they're tanning to tan, they're gonna wind up with too much damage to their skin.

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914.707 - 937.037 Chris Masterjohn

But what I would do is, um, for morning sunlight, I think you can get like a lux meter app and just some people are, some people, they think that it's, there's no sun outside, but actually it's like a hundred times or a thousand times brighter than indoors and their eyes are adjusting. And so it's like cloudy or overcast, but there's still a lot of value in going outside.

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937.378 - 942.705 Chris Masterjohn

So I would say if you use a lux meter and it's like under 10,000, you could get a, um,

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942.685 - 967.36 Chris Masterjohn

like a light therapy light at home to use to just like turn it on and not look straight into it but kind of have it going into your eyes um and then for vitamin d uh you could you could do like tanning bed but just try to really keep it minimal like go in go in for two or three minutes not like you're trying to tan you're just what i was getting at is there a different kind of tanning bed

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967.34 - 968.984 Joe Rogan

that's maybe imitates?

969.184 - 999.321 Chris Masterjohn

Yeah, so there are different ratios of wavelengths. And the ones that have more UVB are the ones that are gonna give you more vitamin D. So if you're just going to a tanning bed place, probably the staff there tell them that you want like mixed wavelength that gives you a mix of like surface tan and deep tan. I think that's how they, because they don't know the vitamin D science.

999.382 - 1005.632 Chris Masterjohn

So I think that's how you have to get the bed that gives you more vitamin D. You have to tell them I want a mix of surface and deep.

1005.652 - 1030.436 Joe Rogan

That's funny. Yeah. Speaking of red light and speaking of therapy that helps your mitochondria, what is your thoughts on methylene blue? Methylene blue seems to be a very controversial supplement. Some people think it's amazing and it's a panacea for all that ails you. And other people are like, what are we doing here? Why are you putting dye in your body? Your piss is coming out blue.

1030.476 - 1033.776 Joe Rogan

This is weird. What school are you in?

Chapter 5: How does creatine affect cognitive function and energy levels?

1689.908 - 1693.413 Chris Masterjohn

Then you cook the creatine out of them and you wind up with much lower dose.

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1693.633 - 1700.022 Joe Rogan

We should probably say salmon. You're talking about wild salmon versus farm salmon, which has a dyed pink skin.

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1700.002 - 1722.398 Chris Masterjohn

Um, well, it's not the red color. I think it's coincidence that it's that it's I think the red color is coincidence. It's just a helpful way to think about it. But it probably is the case, at least like every Atlantic farm salmon that I've seen is you can tell that it's it's well, if you look up in database way higher in fat.

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1722.378 - 1746.648 Chris Masterjohn

But you can tell by looking at it that it just doesn't have that lean look that wild salmon has. So I think creatine is a function of the lean tissue mass. And it might be the case that wild salmon are doing a lot more swimming. Like maybe the wild environment is encouraging them to use their muscles in a way that increases their creatine synthesis. That wouldn't surprise me.

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1746.688 - 1768.423 Chris Masterjohn

I have tried to steel man the case of... Could there be a vegan diet that would make you not need to supplement with creatine? And the steel man that I've got for you is you'd have to be eating a half a kilogram of tofu and a half a kilogram of quinoa per day. And that's not typically what. And that might rip a hole in your digestive system, but that's not typical.

1768.443 - 1795.235 Chris Masterjohn

Boy, you just hurt my stomach just saying that. So I think that most vegans should probably just supplement with creatine. Call it a day there. So that's creatine. We mentioned sunlight. So sunlight is when you wake up in the morning. I said before that your mitochondria have not gone to sleep literally, but they've really slowed down. It's like they're on a nap.

1795.255 - 1818.096 Chris Masterjohn

And there's a transition when you wake up where the mitochondria have to say, oh, you've woken up. Now I need to wake up and I need to start producing more energy. And sunlight going into your eyes, being translated into your brain, is the signal that actually tells your brain to organize that.

1818.076 - 1842.072 Chris Masterjohn

and so what happens as a result of that is that signaling helps your mitochondria adapt and start producing everything and it actually helps them adjust and if you don't have the morning sunlight you are you're going to have your mornings full of suboptimal energy metabolism that is initiating that vicious cycle of aging. That's what I believe.

1842.814 - 1861.845 Chris Masterjohn

And then it's also the case that the red and infrared light from the sun is very beneficial to the mitochondria. The best time to get that would be in the morning. When you go out in the afternoon, you've got to deal with, like, can I get two hours of this without getting burned?

Chapter 6: What is the significance of dietary choices on mitochondrial health?

2479.093 - 2505.282 Chris Masterjohn

But cancer becomes very interesting because there was a study in rodents that showed that stretching prevents tumor growth. And I thought this was wild. I first heard about this on one of Huberman's shows. And so I looked up the study and I was like, this is wild because I happen to know some other things about immune function.

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2505.342 - 2531.92 Chris Masterjohn

So one thing is that when T cells, which are important both to prevent infections and are also important because they attack you during autoimmunity, and they're also important because they kill cancer. For T cells to be activated, what they do is they don't have enough energy themselves. So they push off the local environment.

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2532.862 - 2562.432 Chris Masterjohn

And that pushing off creates motor proteins inside that generate the energy to activate the T cell. And what cancers do is they modify their extracellular environment to compromise that because it's harder for the T cell to push off of it. Now I know another thing from Crohn's research, which is that the best way to cure Crohn's disease besides some of the drugs that they're on is a liquid diet.

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2563.093 - 2577.437 Chris Masterjohn

And the recent research on how the liquid diet works is that it removes the pressure in the intestine that is pushing out and is causing inflammation to activate and attack the body, right? So I'm synthesizing these three things and I'm like,

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2577.417 - 2602.125 Chris Masterjohn

This makes a lot of sense that the relative proportions and how stretched out and like what is the quality of your joint tissue and things like that probably has a lot of severely underappreciated causation in terms of cancer and autoimmune disease. So I think it would be very interesting to see if

2603.152 - 2626.281 Chris Masterjohn

Actual like functional mechanical activity like if you optimize for functional mechanical activity such that you can swing around from acrobat From a trapeze and flip around in the air and swing on rings and push yourself up and stuff like that Does that? pay forward into better immune function because your body is more properly structured.

2627.062 - 2654.075 Chris Masterjohn

I can't prove that, but I think it's very interesting to think about for those two exercises. And then, it is very interesting to me that gymnasts and pole vaulters both spend a lot of time upside down. And they don't stay upside down for very long, but they just, they repeatedly are upside down quite a bit, right? And so, This is, again, this is all just hypothesizing interesting ideas, right?

2654.698 - 2684.188 Chris Masterjohn

So one interesting idea is that A vibration plate is the sedentary man's gymnastics. And that flipping upside down is better at circulating body fluids than walking. And like a vibration plate is better than walking, but actually spending time in the upside down state and flipping around is actually very good for circulating the fluids in your body.

2684.236 - 2714.874 Chris Masterjohn

I can't prove any of this, but it's all very interesting to think about. What I conclude from this is you don't want to get sucked into just optimizing VO2 max or something like that. The lesson from the gymnast is what are all the things that a gymnast can do that I can't do? I should be able to approximate them in the best way that I can. I take that a little bit more, more literally.

Chapter 7: How do seed oils impact overall health according to the discussion?

2840.453 - 2861.194 Chris Masterjohn

So if you're 20, you should be thinking about what are all the sports I can't do? And I'm not saying there's anything wrong with picking a sport, But I do think it would be good for everyone when they're young enough to do so to just try a different sport once a year. And maybe they don't love it. They don't fall in love with it.

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2861.214 - 2882.764 Chris Masterjohn

But maybe they learn something like, oh, I didn't realize I couldn't do that. So, for example... I did, last year, I did a little bit of BJJ and I did a little bit of boxing. And I was like, God damn, like my feet don't move like they used to in boxing. And in BJJ, I was getting a little dizzy doing forward and backward rolls. And I was like, I don't spend enough.

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2883.065 - 2901.349 Chris Masterjohn

This was before I started thinking about the gymnast being upside down. I was like, I don't spend enough time being upside down. So I was like, so I bought some mats. And then now I just, you know, I do one forward and backward roll every day, no matter, I don't do BJJ right now. But I just do one forward and backward roll every day as part of my morning routine. But I've also switched.

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2901.409 - 2916.439 Chris Masterjohn

I was like, why would I overhead press when I could try to do... I can do wall push-ups now. My hope is by next year I'll be able to do handstand push-ups. But I'm working on a handstand right now, so we'll see how that goes. But I think just...

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2917.82 - 2933.415 Chris Masterjohn

Like, cause you can focus on one thing, you can really miss out that like, oh, my favorite workout activities don't, I mean, this is how many people are doing all their favorite workout routine activities and forgetting that they don't have any rotation. They don't have any side bending.

2934.076 - 2954.039 Chris Masterjohn

You know, like if you would just, you just like try different sport and be like, oh, what did I not realize I wasn't able to do at all? And then pick that and put it in your workout. You know, because if you've got a great programmer, then maybe your workout is perfect. But I think most of us can, like, we gravitate towards some of the exercises that we think are good.

2954.64 - 2966.035 Chris Masterjohn

And even if you think you're mixing it up, like CrossFit, CrossFit managed to eliminate rotation from everything. Like every sport that involves throwing a ball involves rotation, right?

2966.155 - 2971.182 Joe Rogan

Well, they do sometimes. They throw the ball sideways against a wall. There's some rotation in it.

2971.162 - 2976.331 Chris Masterjohn

Oh, maybe they worked it in. When I did CrossFit, the ball throwing we did was wall balls. And so it was like.

Chapter 8: What are the effects of cholesterol on heart disease?

3455.457 - 3482.68 Chris Masterjohn

then injury prevention has to be your number one consideration, not your number two. I think even if you were just trying to say like, how can I be the strongest I could be? You would still need injury prevention to be number one because how many people take three months off from a lift that they're working on and wind up six months behind where they had been

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3482.66 - 3499.443 Chris Masterjohn

when they start again as a result of that injury, and where would they have been if they spent that six months getting stronger? And if you're gonna do that every two or three years, that's taking a huge toll off even the skill that you could develop and your maximal capacity at that.

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3499.804 - 3522.093 Chris Masterjohn

But like I was saying at the beginning, I really think that the simplest explanation for why mitochondrial function declines 1% per year and gets cut in half by age 70 is just this like, When I was injured, my mitochondria were completely obsessed with healing from that injury and a little bit came out of the account used to repair the home base.

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3522.213 - 3544.164 Joe Rogan

That's what I was getting at. Yeah. So for someone who's had like, say, a martial artist who's had broken hands, broken ribs, knee surgery, shoulder surgery, a lot of these guys have gone through a bunch of stuff like that. So each one of those things is taking a small toll. Yeah. Yeah. That's not something that people consider. You think, oh, you recovered from that injury. Now you're 100%.

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3545.065 - 3549.649 Joe Rogan

But you're 100% with the tax of having recovered from that injury.

3550.791 - 3575.079 Chris Masterjohn

Yeah. And a lot of people aren't necessarily fully recovered from the injury either. Oh, many, many aren't. Yeah. Many, many aren't. I talked to a guy once who was – he got injured in marathon running and – He thought he was recovered. I thought he wasn't recovered. And he thought there was some kind of metabolic stuff wrong with him because he's getting sick all the time.

3575.479 - 3579.805 Chris Masterjohn

I'm like, bro, you didn't recover yet. Like, what are you doing going out and doing all that running?

3579.986 - 3580.727 Joe Rogan

What was the injury?

3581.568 - 3587.777 Chris Masterjohn

I don't remember. I forgot the specific injury, but one of the common running injuries.

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