The story
Coined by chronobiologist Till Roenneberg and later popularized by his book Internal Time: Chronotypes, Social Jet Lag, and Why You're So Tired (2012).
Etymology from Wiktionary, CC BY-SA 4.0.
social jet lag
Today it means: A mismatch between a person's natural and biological sleep rhythms and the schedules imposed by work, school, or social obligations. Full definition →