The 24 Hours
The afternoon dip isn't down to lunch. If you're driving between one and three, plan a break.
One in the afternoon above Lavaux: the rows of vines run down to the lake and the road cuts across them. After lunch the mind slows down, and we usually blame the meal. Monk's review gathers the studies on the mid-day dip and shows that it can come even without lunch, and even when the person does not know the time: it has biological roots, possibly in the twelve-hour harmonic of the circadian system. A carbohydrate-heavy meal deepens it, but does not create it. The early-afternoon dip is therefore a matter of the clock, not the plate. Anyone driving between one and three can plan a stop.
Details 57 s · 9:16 · four languages · generated images, voice and music, declared as such · 2026-09-25 · Drive Awake
What helps is moving the drive, not pushing through it: if it can be done earlier or later, it is done earlier or later. When it cannot, the break goes inside those hours, not at the end of the route. A light meal does not cancel the dip, but it does not deepen it either.
Just past one. The Lavaux road, between the vines and the lake. A tractor, and a car catching up with it.
One in the afternoon above Lavaux: the rows of vines run down to the lake and the road cuts across them halfway.
Watch this passage (0:00) →
After lunch it's the mind that slows down. We usually blame the food.
After lunch the mind slows down, and the usual explanation is the meal just finished.
Watch this passage (0:10) →
A review of studies shows the dip can come even without lunch, and even without knowing the time.
Monk, 2005: a review of the studies on the mid-day dip. It can appear even without lunch and even when the person does not know the time, and it may be tied to the twelve-hour harmonic of the circadian system.
Watch this passage (0:18) →
It doesn't come from the food. It comes from the internal clock, which dips on its own in mid-day.
The dip does not come from the plate but from the internal clock, which drops on its own in the middle of the day.
Watch this passage (0:27) →
A heavy lunch deepens it, but the drop was coming anyway. It was already written into the day.
A carbohydrate-heavy lunch deepens the dip, but the dip was part of the day anyway. Anyone setting off now drives through it.
Watch this passage (0:36) →The corrections made to this text, with their date, their reason and the lines they touched.
Three hours already online go back into the edit, and the lines corrected after their first release go in with them. At 1 pm the review says the dip «can come» even without lunch, as the source puts it, and the closing line names an action: plan a stop between one and three. The page adds a source from real driving, Horne and Reyner 1995, with its limitation. At noon the two lunches get their numbers, 305 and 922 calories. At 11 am George Zisa's English lines go in, together with the French and German corrections that were still waiting. The new lines were reviewed blind by two judges per language.
Lines touched IT line 3, FR line 3, DE line 3, EN line 3, IT line 6, FR line 6, DE line 6, EN line 6
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 →
line 1 0:01
IT
L'una passata. La strada di Lavaux, fra i filari e il lago. Un trattore, e un'auto che lo raggiunge.
FR
Une heure passée. La route de Lavaux, entre vignes et lac. Un tracteur, et une voiture qui le rattrape.
DE
Kurz nach eins. Die Strasse durch Lavaux, zwischen Reben und See. Ein Traktor. Ein Auto holt ihn ein.
EN
Just past one. The Lavaux road, between the vines and the lake. A tractor, and a car catching up with it.
line 2 0:11
IT
Dopo pranzo è la testa a rallentare. Di solito la colpa la diamo al piatto.
FR
Après le repas, c'est la tête qui ralentit. D'habitude on en accuse l'assiette.
DE
Nach dem Essen wird der Kopf langsamer. Schuld ist angeblich der Teller.
EN
After lunch it's the mind that slows down. We usually blame the food.
line 3 0:19
IT
Una rassegna di studi mostra che il calo può arrivare anche senza pranzo, e anche se non sai che ora è.
FR
Une revue d'études montre que le creux peut survenir même sans repas, et même sans savoir l'heure.
DE
Laut einer Übersichtsarbeit kann das Tief auch ohne Mittagessen kommen, auch ohne dass du die Uhrzeit kennst.
EN
A review of studies shows the dip can come even without lunch, and even without knowing the time.
line 4 0:28
IT
Il calo non arriva dal piatto. Arriva dall'orologio interno, che a metà giornata scende per conto suo.
FR
Ce n'est pas l'assiette : c'est l'horloge interne, qui baisse d'elle-même au milieu du jour.
DE
Es liegt nicht am Essen, sondern an der inneren Uhr, die mitten am Tag von selbst absinkt.
EN
It doesn't come from the food. It comes from the internal clock, which dips on its own in mid-day.
line 5 0:37
IT
Il pranzo pesante lo accentua, ma ci sarebbe stato comunque. Era già scritto nella giornata.
FR
Un repas lourd l'accentue, mais le creux était là de toute façon. Il était déjà inscrit dans la journée.
DE
Wer schwer isst, spürt es stärker. Aber das Tief gehörte ohnehin zum Tagesverlauf.
EN
A heavy lunch deepens it, but the drop was coming anyway. It was already written into the day.
line 6 0:45
IT
Il calo del pomeriggio non è colpa del pranzo. Se guidi fra l'una e le tre, prevedi una sosta.
FR
Le creux de l'après-midi n'est pas la faute du repas. Si tu conduis entre 13 et 15 heures, prévois une pause.
DE
Das Nachmittagstief kommt nicht vom Essen. Fährst du zwischen 13 und 15 Uhr, plan eine Pause ein.
EN
The afternoon dip isn't down to lunch. If you're driving between one and three, plan a break.
A question about this hour · 13:00
At the wheel in the early afternoon, how do you feel compared with the morning?
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.
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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.
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 →
2026-09-25 · Drive Awake
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