New research shows that a lack of sleep really can make you sick. Sleeplessness can be directly tied to illnesses, like the common cold.
Teenagers have altered biological clocks and need more sleep, which suggests that a later school start time for teens might be just what the doctor ordered.
Yawning after spotting someone else yawning is associated with empathy and bonding. But who will most often see a yawn and yawn in response?
Here's how one person learned how to wake up early, and how he made that habit a permanent one.
Teens need to get enough rest to stay healthy, yet the number of hours they sleep each night is decreasing.
Using a measure rarely relied upon in studies, researchers have uncovered evidence of what may be damaging the brain in people with sleep apnea.
For years, Donna believed her chronic insomnia was something she and medical science couldn't change. A trip to a sleep center changed all that.
Postpartum women are urged to be cautious about returning to work too quickly, after a study found many new moms still tired four months after giving birth.