Although for an adult 7-9 hours is recommended, many studies have shown that people can range between needing 6-10 hours a night.
Sleep is a dynamic and regulated set of behavioral and physiological states during which many processes vital to health and well-being take place. Neuroscientists have shown that some areas of the brain are actually more active during the sleep state than during the wake state.
Healthy sleep comprises many dimensions, including adequate duration, good quality, appropriate timing, and the absence of sleep disorders.
People can become very distressed when they feel they are not getting a good night’s sleep, which can then make it harder to get off to sleep.
Not getting enough sleep at night is generally associated with daytime sleepiness, daytime fatigue, depressed mood, poor daytime functioning, and other health and safety problems.
Growing evidence shows that a chronic lack of sleep increases the risk of obesity, diabetes, cardiovascular disease, and infections.
There are five stages of sleeping:
Stage 1: Transition to Sleep
Stage 2: Light Sleep
Stage 3: Deep Sleep
Stage 4: Intense Deep Sleep
Stage 5: REM/Dream Sleep
Sleeping - a natural way of restoring body’s energy
