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"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Whether you’re listening to a news podcast debating the merits of changing school start times or ...

Being forced to go to sleep and wake up earlier than your chronotype has consequences. Are you a night owl who cringes—maybe even yawns—at phrases like “the early bird catches the worm”? If so, Matt ...

Being more active in the morning or afternoon is not just a matter of personal preference. Chronotype, which is each person's biological tendency to function better at certain times of the day, can ...

Whether you’re listening to a news podcast debating the merits of changing school start times or consuming IG content from an expert urging the government to end daylight savings time, you’re likely ...

Most people acknowledge that there are two types of sleepers in the world—early birds and night owls—but research has shown that there are actually four or more sleep-wake cycles. The time you ...

Staying up late has long been framed as a harmless personal preference, but new evidence suggests it may carry a measurable cost for the heart. Large studies now link an evening chronotype, the ...