Every caffeine protocol

The rule he says most often. It has quietly grown conditions: in 2021 he just states it, by July 2023 it's “if, and only if, you have trouble with an afternoon crash,” and in the Galpin series he only does it on days he isn't training.

Eight to twelve hours before bed. Caffeine fragments deep sleep even when it doesn't stop you falling asleep.

The other half of the cutoff rule — get the dose in early rather than spreading it out.

Timed 2–4 hours before your temperature minimum it delays the clock; just after, it advances it. A circadian tool, not just a stimulant.

Small afternoon doses after travelling west, to stay up until the local bedtime.

By weight, not a flat 200 mg. Start at the bottom of the range if you aren't used to it.

Commercial coffees vary enormously. He wants you to check rather than guess.

Chronic high intake biases toward anxiety, electrolyte depletion, headaches and microvascular disruption.

Benefits look U-shaped. Past three or four cups they start coming back down.

The catch-all rec — every episode where he endorses caffeine without attaching a specific protocol.

Water plus caffeine is the whole pre-workout he endorses. Skip it if it makes you jittery or scatters your attention.

Then dose 30 minutes before. The same amount hits much harder once sensitivity comes back.

The obvious corollary that people skip.

Neither extra nor less. Extra caffeine on top of bad sleep makes you agitated on stage.

His stated preference for keeping the performance effect without the withdrawal.

Take it beforehand so the effect runs through the session.

The opposite. Caffeine toward the tail of a study session, to prime plasticity around what you just learned — he calls it counterintuitive himself. In a Seattle Q&A he goes further: double espresso right after studying.

Matt Walker's suggestion that caffeine may boost hippocampal encoding — offered as plausible, not tested.

In December 2022 he argues against espresso before a nap. At a 2024 live Q&A he recommends it. Matt Walker is for it.

It costs you the following night's recovery sleep. Sits directly against the encoding argument above.

Two weeks, a wearable, one variable — swap the afternoon coffee and see.

Cut 10–15% a day over 4–7 days. Or halve it for 2–4 days, then take 1–2 days fully off.

That becomes your new baseline. Go higher only occasionally, and don't let it stick.

Shorter than most people expect. Push through rather than escalating.

Get outside, move, then go back to your target level.

One guest quit cold turkey: flu symptoms for 28 hours, 18 hours of sleep, a week of headache.

Keep the ritual, drop the drug. The taste and warmth still start the day.

Had too much? Something that raises blood glucose takes the edge off caffeine, cortisol and adrenaline. He suggests bread.

The pastry with your coffee isn't just calories — caffeine is training the craving. Works in your favour too.

Stacking matters more than people track.

Daily caffeine is fine for most adults only if it doesn't cause anxiety or wreck sleep. Jittery from small amounts? Skip it entirely.

Habitual coffee drinking may bias brain connectivity toward anxiety even when you aren't currently caffeinated. Not the same claim as the one above.

Black coffee before any food is the trigger. Eat something with it.

Caffeine is a bladder irritant.

Under 14, avoid. 15 to 18, limit it — brain wiring is still going on. Energy drinks and added neuroactives wait until 18.

A stimulant raises energy demand exactly when neurons can't meet it.

Not the same day, and ideally not either side of it. Animal work suggests it increases neurotoxicity.

Specifically the caffeine-to-start, alcohol-to-end pattern.

It relieves a withdrawal headache and can make other kinds far worse. Depends which one you have.

His usual source, second only to coffee. Non-smoked only — the smoked kind may be carcinogenic. Leaves can be re-steeped all day.

Nearly as much caffeine as coffee, sweeter, traditionally drunk at 4–6 a.m.

Mentioned as part of his own rotation.

Useful for pairing caffeine with a drink you want to start liking. Also: in pill form it doesn't break a fast.

Prefer plain coffee or tea. If you do drink one, know what every ingredient does.

Small enough that he doesn't think it meaningfully breaks a fast.

Caffeine cream on the scalp, three times a week rather than daily. He says it goes head to head with minoxidil (Rogaine) for keeping hair and regrowing some, without minoxidil's blood-pressure problems. A guest calls the effect weak.

Don't count the caffeinated drink as hydration. Six ounces of coffee, twelve of water.

Galpin, on the same question: add the coffee to the water and you're fine. Flatly the opposite of the line above.

Both sides agree on this bit.

Black coffee and unsweetened tea are treated as fasting-compatible.

Only if you use caffeine rarely, as a spike rather than a habit — the adrenaline is the point. Drink water with it.