Delayed sleep phase syndrome (DSPS) is a most prevalent circadian rhythm sleep disorder and is marked by a delay in the timing of sleep episode compared to desired or necessary sleeping and wakeup ...

Your DNA has a big impact on your sleep. It determines your circadian rhythm and even predisposes you to some sleep disorders. Taylor Leamey wrote about all things wellness for CNET, specializing in ...

Past age 50, men are much more likely to have REM sleep behavior disorder than women. Jose Luis Pelaez/Stone via Getty Images Every night, you go through four to five sleep cycles. Each cycle, lasting ...

Insomnia isn’t just a result of late nights or poor habits; it’s often a sign of something deeper. If you find yourself wide awake despite feeling tired, there could be an underlying medical reason.

Oversleeping, defined as sleeping nine or more hours in 24 hours, can seem harmless, especially after a tiring week, but consistently sleeping too much often signals that something deeper is affecting ...