If you are someone who wakes up naturally early morning without relying on an alarm clock, it means your body is in sync with your daily schedule. But if you’re a nyctophile, inconsistent sleep cycle could affect your daily mood and anxiety, says a new study published in the journal Molecular Psychiatry.

The study used sleep data gathered from wrist activity monitors worn by more than 85,000 participants in the UK Biobank Study, which houses in-depth genetic and health information on more than half a million Brits, reports usatoday.com.

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The findings also say that those with an inconsistent sleep cycle are more likely to report anxiety and depression and this trait is usually found in night owls.

“The health problems associated with being a night owl are likely a result of being a night owl living in a morning person’s world, which leads to disruption in their body’s circadian rhythms,” sleep specialist Kristen Knutson, an associate professor of neurology and preventive medicine at Northwestern University Feinberg School of Medicine, told CNN.

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For morning people, there’s more good news.

“If you’re a morning person, then you are less likely to have depression and more likely to report higher well-being. This may in part be due to people who are morning people are less likely to have ‘social jet lag,” Dr. Jessica Tyrrell, author of the study, told CNN.

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The study also says that our sleep cycles also can change naturally as we age.”Generally, as we get older, our cycles shift toward the earlier hours. Teens are more likely to be night owls, and octogenarians are more likely to be early risers,” Dr. Neil Kline, a sleep physician and representative of the American Sleep Association, told usatoday.com.