WHAT ARE SLEEP DISORDERS

What is sleep? Sleep is a dynamic process during which the brain is very active. There are recognized stages of sleep, each of which is characterized by a different type of brain wave activity. Sleep isn’t just "time out" from daily life. It is active state important for renewing our mental and physical health each day.

Why Does the Body Need Sleep? It is not clear exactly why the body requires sleep, although inadequate sleep can have severe detrimental effects on health. more...