Study Finds Five Distinct Human Sleep Chronotypes

Study finds five distinct human sleep chronotypes

The familiar labels "night owl" and "early bird," long used in sleep research, don't fully capture the diversity of human internal clocks, a new study has found.

Night owl or early bird? Study finds sleep categories aren't that simple

The familiar labels "night owl" and "early bird," long used in sleep research, don't fully capture the diversity of human internal clocks, a new study has found. The McGill University-led study published in Nature Communications found the two sleep-wake patterns, called chronotypes, contain a total of five distinct biological subtypes, each associated with different patterns of behavior and health.

Early Bird or Night Owl? New Study Reveals Sleep Patterns Are More Complex

For decades, sleep science has categorized individuals into two broad chronotypes: “night owls” who prefer late hours and “early birds” who rise with the dawn. However, a groundbreaking new study led by McGill University challenges this binary framework, revealing a far more intricate mosaic of human biological clocks. Published in Nature Communications, the research uncovers five distinct chronotype subtypes, each embodying unique behavioral an…

Night owl or early bird? Study finds sleep categories aren’t that

Scientists identify five biological sleep-wake profiles linked to different health and behaviour patterns, helping explain why sleep schedules affect people differently The familiar labels “night owl” and “early bird,” long used in sleep research, don’t fully capture the diversity of human internal clocks, a new study has found. The McGill University-led study published in Nature Communications found the two sleep-wake patterns, called chronotyp…