If you've ever had a sleepless night then you'll know what it feels like to be sleep-deprived. But it's one thing to get a poor night's sleep, quite another to go for a full 24 hours or longer with ...

When HHMI Investigator Amita Sehgal started studying sleep 25 years ago, the topic elicited a yawn from most biologists. "In ...

If you still feel tired after getting eight hours of sleep, something may be precluding you from feeling well-rested. Certain ...

Short sleepers, who make up less than one per cent of the population, spend significantly less time snoozing without any ...