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Coffee

Online · version of 01.10.2026 · on our channels on 01.11.2026

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Coffee masks sleepiness; it doesn't remove it. Pull over: a coffee, then a ten-minute nap. Drive on only when awake.

It's 9 am. The moka pot is on the stove, as it is every morning. Coffee is the ritual that opens the day. At the café, standing at the counter, the words are always the same: a coffee, please. Then we set off again. The need for sleep has a molecule: adenosine. It builds up through every hour we are awake. Caffeine has a similar shape and takes its place. The signal is covered. But adenosine is still there, waiting. Motorway, at night. After a strong coffee, 75 per cent drive as if it were daytime. After a half-hour nap, 66 per cent. After a decaf, 13. Coffee doesn't clear quickly: every five hours, half of it is still there. The 9 am cup is down to an eighth by midnight. The 5 pm cup, to more than a third. It isn't just coffee. Tea, cola, energy drinks, chocolate, some medicines: the total goes to bed with you. Anyone who sets off after a coffee feels awake. The need for sleep hasn't gone: it's only covered.

In the video

  1. 0:00Nine o'clock
  2. 0:10Adenosine
  3. 0:18Caffeine
  4. 0:26On the road
  5. 0:33The person
  6. 0:42The message

Details 57 s · 9:16 · four languages · generated images, voice and music, declared as such · 2026-09-08 · Drive Awake

What helps

Coffee first, then sleep: it sounds backwards, but caffeine takes 20 to 30 minutes to reach the brain. In the first minutes it does not stop you dozing off, and by the time you wake it is entering the bloodstream: the two effects add up. In a simulator, 200 mg of caffeine followed by a nap of under 15 minutes cut incidents to 9% of placebo, against 34% with caffeine alone; the effect is there even in those who only doze with their eyes closed (Reyner and Horne 1997). Ten minutes is enough: it is the most effective of the durations measured, and the benefit is there as soon as you wake. At twenty it only arrives thirty-five minutes later; at thirty, waking is harder (Brooks and Lack 2006). If you are sleepy before setting off, the coffee is not the start: the nap is.

The video explained

5 scenes, with notes and sources
Nine o'clock · 0:00
0:00 · Nine o'clock

It's 9 am. The moka pot is on the stove, as it is every morning. Coffee is the ritual that opens the day.

At 9, the body's alertness is climbing towards its late-morning peak (episode 04). Coffee arrives at the hour when it is needed least: it is a ritual before it is a stimulant, and that is fine. In Switzerland people drink over 1,200 cups a year each, among the highest in the world. This episode's images are generated and set in Lugano, declared as an exception: a recognisable Switzerland, not just anywhere.

Watch this passage (0:00) →
Adenosine · 0:10
0:10 · Adenosine

The need for sleep has a molecule: adenosine. It builds up with every hour we're awake.

Adenosine is the residue of the energy cells burn (it comes from ATP). While we are awake it builds up in the brain and docks onto its receptors, mainly A1 and A2A: the more adenosine docked, the more sleepiness. During sleep it is cleared. It is one of the two forces of sleep, the pressure that grows with hours awake; the other is the circadian clock (episode 04).

Watch this passage (0:10) →
0:18 · Caffeine

Caffeine has a similar shape and takes its place. The signal is blocked, but adenosine is still there.

Caffeine has a shape similar enough to fit the same receptors without activating them: it occupies the lock and adenosine cannot get in. The signal is covered, not switched off: adenosine keeps building up behind the door. When caffeine fades, it arrives all at once and sleepiness comes back stronger. People who drink coffee every day make more receptors, and the same cup does less: that is tolerance (Nehlig 2018; EFSA 2015).

Nehlig 2018 · DOI 10.1124/pr.117.014407

Watch this passage (0:18) →
0:26 · On the road

On the motorway at night, after a strong coffee, 75 per cent drove as if it were daytime.

Twelve young men drove 200 km on a real motorway between 2 and 3.30 at night, with an instructor on board. After half a cup of coffee with 200 mg of caffeine, 75% drove as they would by day, that is with no or only one lane departure (Philip 2006). It is one of the few open-road studies: the figure transfers to real driving. Pierre Philip is also one of the Monte Verità voices.

Philip 2006 · DOI 10.7326/0003-4819-144-11-200606060-00004

Watch this passage (0:26) →
The person · 0:33
0:33 · The person

After a coffee, you feel awake. But the need for sleep hasn't gone.

Anyone who sets off after a coffee feels awake because the signal is covered, not because the need for sleep has passed. It is the same trap as in episode 08: the sleepiness you feel and the sleepiness that is there do not match (Van Dongen 2003). Coffee helps for a stretch; then the debt turns up, often at the worst hour.

Watch this passage (0:33) →

What changed in this text

5 corrections · the latest on 01.10.2026

The corrections made to this text, with their date, their reason and the lines they touched.

  1. 16.09.2026Two-engine blind test, with a calibration set

    Four loan translations, in Italian, German and French

    The lines of every hour online went past two judges with no context, mixed in with certified sentences written by native speakers. Only the four whose reason names a mistake anyone can check were applied: «piu tempo prende il viaggio» was a loan translation of «it takes time»; «non e poca volonta» is ungrammatical; the German talked around «Nachtschicht», a word the same episode already uses twice; in French «le total» is arithmetic and follows nobody to bed.

    Lines touched FR line 9

  2. 17.09.2026Cross-comparison test, two judges

    French had lost one item from the list

    While fixing a loan translation on 16 September we had dropped «boissons energisantes» from the French list so the line would fit the plate. The other three languages named five things, French four. Both judges saw it. With different punctuation all five fit: «energy drinks», which is what French calls them.

    Lines touched FR line 9

  3. 17.09.2026Native reading with a third engine (Google AI Mode)

    Two loan translations in German, and a missing referent

    A third engine read every line in its own language alone, without the others beside it: that is the test loan translations need, and the one cross-comparison cannot give. In German «besetzt seinen Platz» echoed the Italian «ne prende il posto» (German says «nimmt seinen Platz ein»), and «die Summe nimmst du mit ins Bett» was the same loan translation we had already fixed in French on 16 September. In hour 09 the coffee line did not say what it was about: German and English named the coffee, Italian and French did not. All four name it now. The other languages followed: in French «deux, six et seize heures» dropped the word «heures» from the first two, which Italian allows and French does not, and «comme en plein jour» places an action in time rather than describing how someone drives; in English «the body asks for sleep» echoed «chiede il sonno» and becomes «calls for». Italian had no loan translations at all: it is the language the lines are written in.

    Lines touched DE line 4, DE line 9, IT line 8, FR line 8, FR line 5

  4. 17.09.2026Check of the plate measurements

    Six lines did not fit the plate

    Every line has a limit: three plate lines, four for the closing line. Six were over, and on screen the text runs out of frame or shrinks. In the closing line of hour 09 the words «if you're sleepy» were dropped: they contradicted the line before, which says that after a coffee you FEEL awake and the sleep is only covered. Waiting until you feel sleepy is exactly what does not work. «Pull over» on its own is truer, and all four languages fit.

    Lines touched IT line 11, FR line 11, DE line 11, EN line 11

  5. 01.10.2026New version of the 10 am, 9 am and 8 am episodes

    10 am, 9 am and 8 am: six boards and the corrected lines in the videos

    Three hours already online go back into the edit, and with them come the lines corrected after the first release. Hour 08 gets two revised French lines, two revised German lines and three English lines by George. Hours 09 and 10 get George's English lines and, in hour 10, one French line. Episodes 09 and 10 go from eleven and eight boards respectively to six: we keep lines that were already there and write no new ones.

    Lines touched EN line 2, EN line 3, EN line 4, EN line 5, EN line 6

Revisions that concern the whole series are in the campaign diary →

Every line, in all four languages →

The text, in all four languages

6 lines

The same lines you see in the video, side by side. This is where the gaps between languages show: a turn of phrase that does not hold, a word out of place, a figure that changes weight. If you find one, the button next to the line opens the report with hour, language and minute already filled in. All episodes on one page →

  1. line 1 0:01

    IT

    Sono le nove. La moka è sul fuoco, come ogni mattina. Il caffè è il rito che apre la giornata.

    FR

    Il est neuf heures. La cafetière est sur le feu, comme chaque matin. Le café est le rituel qui ouvre la journée.

    DE

    Neun Uhr. Der Espressokocher steht auf dem Herd, wie jeden Morgen. Das Ritual, mit dem der Tag beginnt.

    EN

    It's 9 am. The moka pot is on the stove, as it is every morning. Coffee is the ritual that opens the day.

  2. line 2 0:11

    IT

    Il bisogno di sonno ha una molecola, l'adenosina. Si accumula per tutte le ore in cui siamo svegli.

    FR

    Le besoin de sommeil a une molécule : l'adénosine. Elle s'accumule heure après heure, tant qu'on est éveillé.

    DE

    Das Schlafbedürfnis hat ein Molekül: Adenosin. Es sammelt sich an mit jeder Stunde, die wir wach sind.

    EN

    The need for sleep has a molecule: adenosine. It builds up with every hour we're awake.

  3. line 3 0:19

    IT

    La caffeina ha una forma simile e ne prende il posto. Il segnale è coperto. Ma l'adenosina resta lì, e aspetta.

    FR

    La caféine a une forme semblable et prend sa place. Le signal est couvert. Mais l'adénosine reste là, et attend.

    DE

    Koffein hat eine ähnliche Form und nimmt dessen Platz ein. Das Signal ist überdeckt. Adenosin wartet.

    EN

    Caffeine has a similar shape and takes its place. The signal is blocked, but adenosine is still there.

  4. line 4 0:27

    IT

    Autostrada, di notte. Dopo un caffè forte, il 75 per cento guida come di giorno.

    FR

    Autoroute, de nuit. Après un café fort, 75 pour cent conduisent comme s'il faisait jour.

    DE

    Autobahn, nachts. Nach einem starken Kaffee fahren 75 Prozent wie am Tag.

    EN

    On the motorway at night, after a strong coffee, 75 per cent drove as if it were daytime.

  5. line 5 0:34

    IT

    Chi riparte dopo il caffè si sente sveglio. Ma il bisogno di sonno non è passato.

    FR

    Celui qui repart après un café se sent réveillé. Mais le besoin de dormir n'est pas passé.

    DE

    Wer nach dem Kaffee weiterfährt, fühlt sich wach. Doch das Schlafbedürfnis ist nicht weg.

    EN

    After a coffee, you feel awake. But the need for sleep hasn't gone.

  6. line 6 0:42

    IT

    Il caffè copre la sonnolenza, non la cancella. Fermati: un caffè, poi dieci minuti di sonno. Riparti solo se sei sveglio.

    FR

    Le café couvre la somnolence, il ne l'efface pas. Arrête-toi : un café, puis dix minutes de sieste. Ne repars que réveillé.

    DE

    Kaffee überdeckt Schläfrigkeit, mehr nicht. Halte an: trink einen Kaffee, dann schlaf zehn Minuten. Fahr erst weiter, wenn du wach bist.

    EN

    Coffee masks sleepiness; it doesn't remove it. Pull over: a coffee, then a ten-minute nap. Drive on only when awake.

Transcript
  1. 0:02 It's 9 am. The moka pot is on the stove, as it is every morning. Coffee is the ritual that opens the day.
  2. 0:11 The need for sleep has a molecule: adenosine. It builds up with every hour we're awake.
  3. 0:19 Caffeine has a similar shape and takes its place. The signal is blocked, but adenosine is still there.
  4. 0:27 On the motorway at night, after a strong coffee, 75 per cent drove as if it were daytime.
  5. 0:34 After a coffee, you feel awake. But the need for sleep hasn't gone.
  6. 0:43 Coffee masks sleepiness; it doesn't remove it. Pull over: a coffee, then a ten-minute nap. Drive on only when awake.

Captions IT FR DE EN

A question about this hour · 09:00

When you take a break from driving, what do you usually do, and why?

There is no right answer: we are interested in the experience of people who drive, including for work.

The conversations happen on our channels. When there is one about this hour, we will link to it here.

Reply on our channels: Instagram Facebook LinkedIn YouTube TikTok Telegram

Online · always open to reports

This episode is online. If something feels off, a word, a figure, a detail in the image, tell us below: two lines are enough. We read everything, and every correction goes into the diary, with its date.

Tell us what you noticed

We read every message. If it becomes a correction, the text changes here on the site and goes into the episode's diary, with its date and its reason. Corrections already made →

Details, if you like
We keep nothing beyond what you write here.

Sources

  • Philip P, Taillard J, Moore N, et al. The effects of coffee and napping on nighttime highway driving: a randomized trial. Ann Intern Med 2006;144:785-791. DOI: 10.7326/0003-4819-144-11-200606060-00004 road
  • Reyner LA, Horne JA. Suppression of sleepiness in drivers: combination of caffeine with a short nap. Psychophysiology 1997;34:721-725. DOI: 10.1111/j.1469-8986.1997.tb02148.x laboratory
  • Brooks A, Lack L. A brief afternoon nap following nocturnal sleep restriction: which nap duration is most recuperative? Sleep 2006;29:831-840. DOI: 10.1093/sleep/29.6.831 laboratory
  • Drake C, Roehrs T, Shambroom J, Roth T. Caffeine effects on sleep taken 0, 3, or 6 hours before going to bed. J Clin Sleep Med 2013;9:1195-1200. DOI: 10.5664/jcsm.3170 laboratory
  • Nehlig A. Interindividual differences in caffeine metabolism and factors driving caffeine consumption. Pharmacol Rev 2018;70:384-411. DOI: 10.1124/pr.117.014407 laboratory
  • EFSA Panel on Dietetic Products, Nutrition and Allergies. Scientific Opinion on the safety of caffeine. EFSA Journal 2015;13:4102. DOI: 10.2903/j.efsa.2015.4102 laboratory
  • Institute of Medicine. Caffeine for the Sustainment of Mental Task Performance: Formulations for Military Operations. National Academies Press 2001. DOI: 10.17226/10219 laboratory
  • Van Dongen HPA, Maislin G, Mullington JM, Dinges DF. The cumulative cost of additional wakefulness: dose-response effects on neurobehavioral functions and sleep physiology from chronic sleep restriction and total sleep deprivation. Sleep 2003;26:117-126. DOI: 10.1093/sleep/26.2.117 laboratory

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2026-09-08 · Drive Awake