Do you jump out of bed early in the morning, energized and eager to take on the day? Or do you slap the snooze alarm till the very last second and drag your exhausted body to work? If you’re a morning person, rejoice: your natural sleep patterns, or circadian rhythms, are in sync with standard job schedules and school drop-off times.

According to a new study published on June 7, 2021, in the journal Molecular Psychiatry, it is not convenient if you’re a night owl because you perform better in the afternoon and evening and stay up late. The researchers utilized sleep data from wrist activity trackers worn by over 85,000 UK Biobank Study participants, which has detailed genetic and health information on over half a million Britons. Researchers linked sleep data to mood self-reports and discovered that those with a disrupted sleep cycle are more likely to experience depression and anxiety. The health problems associated with being a night owl are likely a result of being one living in a morning person’s world, which leads to disruption in their body’s circadian rhythms, according to Kirsten Knutson, an associate professor of neurology and preventive medicine at Northwestern University Feinberg School of Medicine. Meanwhile, Dr. Jessica Tyrrell, a senior lecturer at the University of Exeter Medical School in the United Kingdom, noted that having a higher misalignment was connected to larger odds of depression.

Finally, there’s the chicken-and-egg problem, which frequently afflicts research that can only demonstrate a correlation rather than a causal relationship. It’s also likely that those who are depressed have more irregular sleep cycles, which would require further investigation in the future.