Psychologically, it can amplify feelings of stress, frustration, or burnout, creating a vicious cycle,” she adds. Breaking a revenge sleep procrastination habit can be easier said than done ...

Martínez Madrid warns that even brief exposure to light at night can fragment sleep and increase cardiovascular risks.

Feeling tired despite enough hours? Learn how understanding your 90-minute sleep cycles & using a sleep calculator can help ...

Sleep Cycles: One rapid eye movement (REM) stage and three non-REM stages that altogether last about 90 to 120 minutes Benefits: Physical and mental recuperation and memory consolidation Disorders ...

Dr. Steve Kay, dean of the USC Dornsife College of Letters, Arts and Sciences and a biologist who has long studied the sleep-wake cycle, explains this is a very exciting time for sleep research ...