The Serotonin Protocol
- Difficulty
- Moderate
- Time to result
- ~weeks to results
- Steps
- 5
- Confidence
- —
Serotonin governs mood and energy, and roughly 90% of it is made in the gut. TJ Power's model: the body constantly assesses how healthy it is — sleep, sunlight, nutrient density, breathing — and reports the verdict back to the brain as mood via the vagus nerve. Ultra-processed food shifts the gut's priority from making serotonin to clearing toxins, which shows up as brain fog and low mood. The law of serotonin is to walk headphone-free in nature every day. Five actions follow: morning sunlight before social media, slow resonance breathing, whole-food gut health judged by a single-ingredient test, prolonged sensory time in nature, and protecting deep sleep by controlling what you consume last.
Origin
Extracted from Deep Dive with Ali Abdaal
How to run it
- 1
Earn social media with sunlight
Step outside and get morning sunlight before you look at any social app. Roughly 5 minutes is enough on a sunny day and about 15 minutes on a cloudy one — you still get the benefit through cloud, you just need longer.
Pro tip Frame it as a rule: you have to earn your phone by seeing daylight first.
- 2
Do two minutes of resonance breathing
Sit on a bench in that morning light and breathe six times per minute: 4 seconds in, 6 seconds out, making each round 10 seconds. Slow breathing moves the body into a calm state where serotonin rises. Two minutes is enough.
Pro tip Gamify the count if formal meditation agitates you — you are hitting a number, not clearing your mind.
- 3
Apply the single-ingredient food test
Skip macro accounting and ask: could this food have been on Earth before humans got here? Meat, fish, eggs, dairy, fruit, vegetables, nuts and seeds pass. Build a plate of one-ingredient items rather than products with long unpronounceable ingredient lists.
Pro tip Turn the packet around — a yogurt listing only milk is fine; a chicken kyiv or shop sandwich with 20 unfamiliar words is not.
Watch out Cooking does not count as processing; the distinction is ultra-processed manufacture, not heat.
- 4
Spend prolonged time in nature, senses on
TJ rates this the most important action in the whole DOSE model. Walk slowly, headphone-free, and deliberately tune into what you see, hear and smell so the brain enters a nature flow state. Barefoot on grass adds a grounding effect that calms the nervous system further.
Pro tip Even 10 minutes a few times a week starts building the relationship; the desire for natural food and sleep follows.
- 5
Protect deep sleep with your last input
The brain needs a calming period before sleep, and deep sleep is where serotonin restoration happens. Set a rule that the phone is unusable after 9:30pm. If you will watch something, choose long-form content of at least 15 minutes, held far from the eyes at low brightness.
Pro tip Breathing in bed is the optimum; long-form video is the realistic alternative to scrolling yourself to sleep.
Watch out A sugary late dinner plus scrolling annihilates several systems at once and produces the foggy, unproductive morning.
In the wild
Facing widespread overwork-related depression — they coined a term for it — Japanese researchers led by a psychologist TJ names as Gin Park in the early 2000s tested prolonged time in the country's dense forests, because scaling therapy was not easy. The practice, shinrin-yoku, is simply walking headphone-free and slowly through a forest.
→ They observed large transformations in stress, sleep, anxiety and depression, and measurement tools show heart rate and blood pressure dropping and thoughts slowing as soon as a person is in nature.
TJ cites a psychiatrist investigating the relationship between antidepressant medication and foods that boost gut bacteria. The gut is a microbiome that manufactures serotonin well when the bacterial range is diverse and healthy. Probiotic strains — kombucha, kefir, yogurt or pills — add those bacteria, and SSRIs act on the same serotonin pathway from the other direction.
→ Comparative studies showed broadly comparable data between raising good gut bacteria and medicating serotonin upward, though TJ stresses consulting whoever guides your medication.
Common mistakes
Blaming brain fog on willpower
Waking with a blurry brain is heavily connected to what you ate before bed and the quality of your sleep, not to motivation. Treating it as a discipline problem leaves the actual cause untouched.
Assuming city living blocks nature access
TJ argues it is a priority problem, not an access problem — parks are walkable, cyclable or a tube ride away. People perceive no benefit because they have no relationship with nature, having spent no time there.
Scrolling yourself to sleep
Short-form video as the last input burns the brain out at exactly the point it needs to calm down, delaying deep sleep — the phase where serotonin restoration actually occurs.
From the transcript
“interestingly the law of Serotonin is to make sure you walk headphone free in nature every day”
“resonance breathing is where you're trying to only breathe six times in a minute”
“you can actually simplify this from a serotonin perspective down to could this food have been on Earth before humans got here or could it…”
From the episode
How Dopamine Shapes Your Habits and Productivity - Tj Power
Tj Power