circadian rhythms

(Newser) - Sleepy high-school students slumped over their desks just can’t help it, CNN reports. Most school start times play havoc with teens’ circadian rhythms: Teens naturally go to bed later than adults, and need more sleep. A new study finds pushing the high-school start time from 7:30am to 8:...

(Newser) - A simple mouth swab can tell scientists who's naturally meant to get up early and could forever free people who like a morning snooze from accusations of laziness, the Daily Telegraph reports. The newly developed test reveals the activity of the genes that regulate a person's body clock and identifies...

(Newser) - For those wide-eyed deep into the night, rising and shining with the early birds might seem like an elusive dream that comes to a jarring end each morning. But for this 5% to 30% of the population, understanding circadian rhythms can benefit their tired eyes more than chugging coffee. The...