What is a morning lark?

Someone who naturally wakes and peaks early

Someone whose energy peaks late

What is social jet lag?

A gap between body clock and social schedule

Jet lag from flying with friends

Chronotype Quiz: Larks, Owls and Your Body Clock

This chronotype quiz explains why some people leap out of bed at dawn while others come alive after dark. Play an interactive set of 10 questions on circadian rhythms, the brain's master clock, melatonin, morning light, teenagers' late sleep, aging, genes and social jet lag.

Start Chronotype Quiz

🎯 Daily Trivia Challenge • 🧠 10 Questions • ⏱️ 150 Seconds

Question 1 / 10 Time: 150s

Lark
What is a morning lark?
Owl
What is a night owl?
Rhythm
About how long is the human circadian rhythm?
Clock
Where is the brain's master clock?
Hormone
Which hormone rises in the evening to prepare sleep?
Light
What is the strongest signal that resets the body clock?
Teens
How do chronotypes often change in teenagers?
Age
How do chronotypes often change in older adults?
Jet lag
What is social jet lag?
Genes
What partly determines your chronotype?

Explanations: answer key for all 10 questions

Q1: What is a morning lark?
Answer: Someone who naturally wakes and peaks early
Larks feel best in the morning.
Q2: What is a night owl?
Answer: Someone whose energy peaks late
Owls prefer late bedtimes.
Q3: About how long is the human circadian rhythm?
Answer: About 24 hours
Circa diem means about a day.
Q4: Where is the brain's master clock?
Answer: The suprachiasmatic nucleus
It sits in the hypothalamus.
Q5: Which hormone rises in the evening to prepare sleep?
Answer: Melatonin
The pineal gland releases it.
Q6: What is the strongest signal that resets the body clock?
Answer: Light
Morning light shifts us earlier.
Q7: How do chronotypes often change in teenagers?
Answer: They shift later
Many teens struggle with early starts.
Q8: How do chronotypes often change in older adults?
Answer: They shift earlier
Many older people wake early.
Q9: What is social jet lag?
Answer: A gap between body clock and social schedule
Weekends often reveal it.
Q10: What partly determines your chronotype?
Answer: Genes
Clock genes vary between people.

Chronotype Quiz – Larks, Owls and Your Body Clock

A chronotype is your natural preference for when to sleep and when to be active. Morning larks feel sharp early in the day, night owls peak in the evening, and most people fall somewhere between.

The body clock runs on a rhythm of about 24 hours, set by the suprachiasmatic nucleus in the brain. Light is its strongest cue, and melatonin rises in the evening to signal that sleep is near.

Genes shape your chronotype, but age matters too: teenagers tend to drift later and older adults earlier. When work or school ignores the body clock, people can suffer social jet lag, especially on weekdays.

What This Quiz Teaches

Sleep science fans will enjoy these questions.

What larks and owls are
Where the body clock lives
Which hormone helps sleep
How age changes timing
What social jet lag is

Did You Know?

A common questionnaire measures morningness and eveningness.
Screens at night can delay melatonin.
Shift work can strain the body clock.
Many animals and plants have circadian rhythms.
Regular wake times help keep the clock steady.