Sleep and sex regenerate people. They are made for—and need—each other. Humans cannot survive lacking the internal rebuilding of sleep; the species cannot survive (so far) without sex. Less ...

All animals need sleep. When humans or animals don't get enough, it can lead to trouble paying attention, irritability, and other ill effects. In a new study, researchers have made the surprising ...

There are more than 50 sleep disorders classified by the American Academy of Sleep Medicine (AASM). A sleep disorder can severely impact a person's daily life. A sleep specialist can connect each of ...