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Performance glossary

What is Chronotype?

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Quick answer

Chronotype: definition

A chronotype is your natural preference for the timing of sleep and activity — often described as morning type (“lark”), evening type (“owl”) or in between.

Chronotype, explained

Chronotype is partly genetic; large studies have identified hundreds of associated genetic variants. It also shifts with age, with teenagers tending later and older adults earlier.

Why it matters

Scheduling demanding work and sleep around your chronotype can improve productivity and sleep quality.

Learn more

Performance · GuideProductivity & Energy Management: Work Smarter With Your BiologySustainable productivity comes from managing energy, not just time. Learn chronotypes, peak-alertness scheduling, break science and how to reduce decision fatigue.Biohacking · GuideSleep Optimization: How to Get Deeper, More Restorative SleepHow to optimize sleep: duration, timing, light, temperature, caffeine and alcohol, sleep stages, wearables and when to see a doctor. Evidence-informed and practical.

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FAQ

Chronotype FAQs

What is Chronotype?

A chronotype is your natural preference for the timing of sleep and activity — often described as morning type (“lark”), evening type (“owl”) or in between.

Why does Chronotype matter?

Scheduling demanding work and sleep around your chronotype can improve productivity and sleep quality.

Answers

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