Are you a morning person or a night owl? Take this science-backed quiz to find out.

Researchers at the University of Munich developed The Munich Chronotype Questionnaire (MCTQ), to better understand the complexity of our internal body clocks, or chronotypes, and how they influence our lives, according to Business Insider.

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The short questionnaire, designed for people with conventional work schedules, asks about your sleep habits on work and free days, including questions about the time you fall asleep, wake up, and the number of minutes it takes you to get out of bed. Additionally, it asks you to provide the number of hours and minutes you spend outside in daylight.

The results will let you know if you have an earlier or later chronotype compared to the more than 50,000 people that have completed the questionnaire. An earlier chronotype indicates you’re a morning person, and later means you’re a night owl, according to the university.

Chronotypes have a genetic component to them, and help identify your body’s biological preference for sleep. They also affect other components of your life, including when you should eat, socialize, work, and exercise, among other activities.

Another popular science-backed quiz regarding chronotypes classifies you as one of four mammals who have similar sleep characteristics. Are you a bear, dolphin, wolf or lion?

Researchers who study chronotypes have noted that knowing your individual type will lead you to have more productive days.

See also: Get Better Sleep: Infographic Shows Why You Can’t Make Up For Hours Of Missed Sleep

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