Chronotypes: Are You a Lark or an Owl?
Your internal clock influences when you feel best.
What chronotype is
Chronotype is your natural tendency toward earlier or later sleep and activity. It is partly genetic and shifts with age, becoming later in teens and earlier in older adults.
Social jet lag
When work schedules clash with your clock, you accumulate sleep debt and may feel jet-lagged. A big weekend shift in sleep timing is the sign.
Working with it
Schedule demanding tasks at your peak, get morning light to advance your clock and keep a regular wake time.
Try it: Chronotype Calculator
Example with sample values. Open the full calculator →
Chronotype is based on the middle of your sleep on free days, corrected for sleep debt. A big gap between work-day and free-day sleep is called social jet lag.
Educational content only. This article does not replace advice from a qualified health professional. Medical disclaimer.