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Home » Chris Masterjohn on Joe Rogan Podcast #2420 (Transcript)

Chris Masterjohn on Joe Rogan Podcast #2420 (Transcript)

Read the full transcript of nutritional scientist Chris Masterjohn’s interview on The Joe Rogan Experience #2420, November 29, 2025.

Nutritional scientist Chris Masterjohn joins Joe Rogan to break down why your mitochondria might be the real key to energy, longevity, and disease prevention. From debunking the Thanksgiving “turkey makes you sleepy” myth to explaining how creatine, red light, and sunlight impact brain function, sleep, and recovery, this episode dives deep into the biochemistry behind how the body actually works.

Masterjohn also shares practical advice on supplements, diet, and training to protect your mitochondria as you age, and why most people are still missing critical nutrients even on a “healthy” diet. Whether you’re an athlete, biohacker, or just want more energy and better health, this is a dense but accessible masterclass on mastering your metabolism.

Debunking the Thanksgiving Turkey Myth

JOE ROGAN: Hi, Chris, how are you?

CHRIS MASTERJOHN: Good, how you doing?

JOE ROGAN: Very nice to meet you.

CHRIS MASTERJOHN: Nice to meet you as well.

JOE ROGAN: 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 f*ed up their diet.

CHRIS MASTERJOHN: Yeah, that’s right. Well, I just want to tell you public health message that you did not get sleepy because the turkey was high in tryptophan.

JOE ROGAN: Yeah, that’s a weird. Isn’t that a weird one? That’s a weird myth that’s persisted for a long time.

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. 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 could call it a sleeping chemical.