After a night at work, sleep is not a reward. It comes first.
At 5, a night shift ends. For the body, the night is not over. Night workers sleep by day, and daytime sleep is shorter: 2 to 4 hours less. Behind the wheel, two things add up: the body's lowest hour and the sleep that is missing. After the last night shift it takes two nights of sleep to get back to normal. Night workers are not less attentive: their body clock simply follows no roster.
0:00The forecourt
0:07Daytime sleep
0:14Two things
0:20The two nights
0:27The person
0:34The messageDetails 48 s · 9:16 · four languages · generated and declared images · 2026-09-07 · Drive Awake
At 5, a night shift ends. For the body, the night is not over.
The night shift ends while the body clock is still in its night: alertness is close to the 4 a.m. minimum. The forecourt is empty, the body is not.
Åkerstedt 2003 · DOI 10.1093/occmed/kqg046
Watch this passage (0:00) →Night workers sleep by day. And daytime sleep is shorter: 2 to 4 hours less.
Sleeping by day means sleeping against the body clock: sleep breaks off earlier. In EEG studies, sleep after a night shift is 2 to 4 hours shorter.
Åkerstedt 2003 · DOI 10.1093/occmed/kqg046
Watch this passage (0:07) →
Behind the wheel, two things add up: the body's lowest hour and the sleep that is missing.
Sleepiness has two sources: the time of day and the hours spent without sleep. At 5, after a night at work and a short daytime sleep, both are active.
Watch this passage (0:14) →
After the last night shift it takes two nights of sleep to get back to normal.
The sleepiness built up over the shifts does not vanish with one night's sleep: it usually takes two nights to return to usual levels. Days off carry the trace too.
Watch this passage (0:20) →
Night workers are not less attentive. Their body clock follows no roster.
It is neither inattention nor lack of will: it is the body clock, which no work schedule can move. Night workers keep everyone else going; their sleep deserves protection.
Watch this passage (0:27) →The episode's message, spoken and written on screen, comes before the signature.
2026-09-07 · Drive Awake