The amount of sleep you need depends on several factors, especially your age. Although sleep needs vary significantly between individuals, but an adult needs to sleep between 7 to 9 hours. ⏰

Some people report that they feel rested with only a few hours of sleep a night, but their performance is likely to suffer. Research shows that people who get very little sleep many nights in a row do not perform as well on complex mental tasks as people who sleep about seven hours a night. 🕤

REM (Rapid Eye Movement) sleep comes and goes throughout the night, making up a fifth of our sleep (between 15 and 30 minutes). The brain is very active, our eyes move rapidly from side to side and we dream, but our muscles are very relaxed. 😌

Older people need the same amount of sleep, but they usually have only one period of deep sleep at night, usually in the first 3-4 hours. 🥶
After that, they wake up more easily. We also tend to dream less as we get older. 😱