“Night owls” are disadvantaged when it comes to the 9-to-5 workday. A new randomized controlled trial shows that “night owl” chronotypes may be able to shift their circadian rhythms by an average of two hours, and this was associated with improvements in mental wellbeing and perceived sleepiness.

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“Night owls” are disadvantaged when it comes to the 9-to-5 workday. A new randomized controlled trial shows that “night owl” chronotypes may be able to shift their circadian rhythms by an average of two hours, and this was associated with improvements in mental wellbeing and perceived sleepiness.