Free Chronotype Quiz 2026 - Discover If You Are a Lion, Bear, Wolf or Dolphin Sleeper
Take our free 6-question chronotype quiz to discover your biological sleep type. Find your optimal bedtime, wake time, and peak performance window based on your unique circadian biology.
Your chronotype is your genetically-influenced biological preference for sleep and wake timing. It is not a preference or habit — it is determined by PER3 gene variants and shifts predictably through life stages. Answer based on your natural tendencies without any schedule constraints.
If you could freely choose, what time would you wake up?
What Is a Chronotype?
A chronotype is your genetically influenced biological tendency to sleep and wake at particular times. Unlike sleep habits - which you can change through behavioral intervention - your core chronotype is written in your DNA. Researchers at the University of Munich have identified specific variants in PER3, CLOCK, and BMAL1 genes that predict circadian phase preference across populations. Chronotype influences when your body temperature peaks and troughs, when melatonin rises and falls, when cortisol awakening response occurs, and when cognitive performance peaks throughout the day.
The concept was popularized by sleep researcher Dr. Till Roenneberg, whose Munich Chronotype Questionnaire (MCTQ) forms the scientific basis of this quiz. Understanding your chronotype is particularly valuable for optimizing your work schedule, exercise timing, meal timing, and social commitments around your peak biological windows.
🦁 Lion (15-20%)
Early riser. Peak cognitive performance 8-10am. Asleep by 10pm.
🐻 Bear (60%)
Solar-aligned. Morning meetings fine. Peaks 10am-12pm.
🐺 Wolf (15-20%)
Evening performer. Peaks 5-9pm. Struggles before 9am.
🐬 Dolphin (<10%)
Light sensitive sleeper. Irregular rhythm. Focus on quality.
The Chronotype Framework: Dr. Michael Breus
The Lion, Bear, Wolf, Dolphin framework used in our quiz is based on the chronotype classification system developed by Dr. Michael Breus, PhD - a leading US sleep psychologist, double board-certified clinical sleep specialist, and author of the bestselling book The Power of When (2016).
Dr. Breus, known as "The Sleep Doctor," is one of the most recognised sleep authorities in the United States. He has appeared on The Dr. Oz Show, CNN, The Today Show, and dozens of other major US media platforms. His chronotype framework goes beyond the simple "morning person / night owl" binary to identify four distinct biological sleep personalities, each with a specific optimal schedule for sleep, cognitive performance, exercise, and social activity.
🦁 Lion
Early risers who peak cognitively at dawn. Represent ~15-20% of population.
🐻 Bear
Solar-aligned majority. Follow the sun, peak mid-morning. ~60% of people.
🐺 Wolf
Night owls who peak in the evening. ~15-20%, often misunderstood.
🐬 Dolphin
Light, anxious sleepers with irregular rhythms. ~10%, often have insomnia.
Note: Our quiz is inspired by Dr. Breus's chronotype framework and publicly available circadian biology research. SleepScorePro is not affiliated with Dr. Breus or his organisation.
Frequently Asked Questions About Chronotypes
What is a chronotype?
Are chronotypes permanent or can they change?
What percentage of people are each chronotype?
How does my chronotype affect my sleep quality?
Can a Wolf chronotype succeed at a morning-oriented job?
Is the Lion chronotype healthier than the Wolf?
What is the best sleep schedule for a Bear chronotype?
Why do teenagers stay up so late? Is it a Wolf chronotype?
How does the Dolphin chronotype differ from insomnia?
Should I schedule my workout based on my chronotype?
Related Tools & Guides
Use your chronotype result alongside these tools to optimise your entire sleep schedule.
Sleep Score Calculator
Score your current sleep habits against your chronotype window
What Time Should I Go to Sleep?
Ideal bedtime ranges based on chronotype and sleep cycles
Dr. Breus Chronotype Science
Deep dive into the Lion, Bear, Wolf, Dolphin framework
Caffeine Curfew Calculator
Find the last safe coffee time for your chronotype
Sleep Debt Tracker
Calculate how much sleep debt your chronotype has accumulated
How Many Hours Do I Need?
Sleep duration needs by chronotype and age group