What is a common sleep pattern?

A common sleep pattern for adults typically includes around 7 to 9 hours of sleep per night, following a cycle of light sleep, deep sleep, and REM (rapid eye movement) sleep. Sleep generally progresses through these stages multiple times throughout the night, with each cycle lasting approximately 90 minutes. Most people experience a decrease in deep sleep and an increase in lighter sleep as the night progresses. Consistent sleep schedules, where individuals go to bed and wake up at the same times each day, can help reinforce healthy sleep patterns.