Official advice says that healthy adults require 7 to 9 hours of sleep every night for physical and mental health. Anything below this and you risk long-term sleep deprivation, which in turn elevates ...

That extra sleep was non-Rapid Eye Movement (NREM) sleep -- the restorative sleep when the body works to repair itself. Mice are nocturnal and are "polyphasic sleepers" -- napping for a few minutes ...

Can knowledge of how our ancestors slept truly lead us to a life of more natural—and healthy —sleeping patterns? Authors on the Internet have been exploring that possibility, writing a spate of recent ...

Sleep is closely linked to how long and how well we live. It’s when our body repairs itself, grows, and fights off disease. In fact, a 2024 study of 172,321 adults found that men who get enough sleep ...