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Night owls may be twice as likely as early risers to underperform at work, study suggests

February 23, 2021. Summarized by summa-bot.

Compression ratio: 21.4%. 1 min read.

Tired and disappointed female person at home office workplace late at night. Sleepy woman holds cup of coffee or tea sitting at laptop computer and tablet PC in room late in the evening

The traditional working day doesn't benefit everyone, a new study from Finland has suggested.

(CNN)The traditional working day doesn't benefit night owls, with people who prefer to stay up late twice as likely to underperform at work as early birds, a new study from Finland has suggested.

Early risers -- people who have a morning chronotype -- tend to work better early in the morning, while evening types are the reverse.

A quarter of people classified as evening types rated their own performance at work as poor using what the researchers described as an internationally accepted scale developed to identify individuals with poor work ability and a higher risk of retiring early because of disability.

If normal business hours were 3 p. m. to 11 p. m. , the early morning types would feel worse than evening types," said Kristen Knutson, an associate professor at Northwestern University, who researches the association between sleep, circadian rhythms and cardiometabolic diseases, including diabetes, obesity and cardiovascular disease.

"This was the first population-level study to provide evidence that evening chronotype could be related to poor work ability," said the study authors Dr. Tapio Räihä and Leena Ala-Mursula, professor of occupational health care, from the Center for Life Course Health Research at the Univeristy of Oulu, Finland, in an email.

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