Sleep is important for health. But there are many disorder s which can cause discomfort and illnesses.
UP to 15 percent of all people are affected by sleepwalking. This activity while in deep sleep can take various forms. As the name implies, some people walk in their sleep. Some just sit up in bed, and there have been cases of people cooking or even driving a car. Sleepwalking is more common among children than adults, and happens less frequently when a child reaches 11 or 12 years.
SLEEP apnoea is a dangerous disorder. It occurs when the walls of the airways relax so much that breathing is actually interrupted for 10 seconds or more, cutting oxygen off from the brain. But the brain responds immediately, usually by making the person wake up. Sleep apnoea is more common among overweight males over the age of 40.
NACROLEPSY causes people to fall asleep suddenly during the day. One in every 3,000 people in the US have this problem. Amazingly, some narcoleptics can continue performing tasks like writing, walking, or even driving while they are sleeping. This condition has been linked to low levels of a type of hormone which is responsible for making a brain feel awake.
INSOMNIA is one of the most common sleep disorders. A third of Britons experience it at least once in their lives. Insomniacs have trouble falling or staying asleep. They can wake up unusually early in the morning and feel exhausted throughout the day. Stress is thought to be one of the major causes of this condition, but it is also associated with mental health problems like depression and anxiety.
DISRUPTIONS in light exposure can ruin your sleep, so make sure your bedroom stays as dark as possible. Many electronic devices produce enough light to reset your biological clock. Using backlit screens late at night can confuse your brain and thus ruin your sleep.