# social jet lag

> English word · Noun

## Definitions
1. A mismatch between a person's natural and biological sleep rhythms and the schedules imposed by work, school, or social obligations.

## Etymology
Coined by chronobiologist Till Roenneberg and later popularized by his book Internal Time: Chronotypes, Social Jet Lag, and Why You're So Tired (2012).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/social-jet-lag