This One Sleep Mistake Is Destroying Millions of People

What Social Jetlag Is

Social jetlag describes the discrepancy between your biological clock — the internal circadian rhythm that your body maintains based on light exposure, temperature, and habitual timing — and your actual sleep schedule. Most people sleep and wake at different times on weekdays versus weekends,




often shifting by two, three, or even more hours. Your biology experiences this as if you are traveling across time zones every week. The effects accumulate in ways that most people do not connect to their sleep habits.