What Happens During Sleep?
You don't notice it,of course, but while you're asleep, your brain is still active. As peoplesleep, their brains pass through five stages of sleep. Together, stages 1, 2,3, 4, and REM (rapid eye movement) sleep make up a Sleep Cycle.One complete sleep cycle lasts about 90 to 100 minutes. Soduring an average night's sleep, a person will experience about four or fivecycles of sleep.
Stages 1 and 2 are periods of light sleep fromwhich a person can easily be awakened. During these stages, eye movements slowdown and eventually stop, heart and breathing rates slow down, and bodytemperature decreases. Stages 3 and 4 are deep sleep stages. It's moredifficult to awaken someone during these stages, and when awakened, a personwill often feel groggy and disoriented for a few minutes. Stages 3 and 4 arethe most refreshing of the sleep stages — it is this type of sleep that wecrave when we are very tired.
The final stage of the sleep cycle is known asREM sleep because of the rapid eye movements that occur during this stage.During REM sleep, other physical changes take place — breathing becomes rapid,the heart beats faster, and the limb muscles don't move. This is the stage ofsleep when a person has the most vivid dreams.
Self Introspection :Am I Getting Enough Sleep?
Even if you think you're getting enough sleep,you might not be. Here are some of the signs that you may need more sleep:
-difficulty waking up in the morning-inabilityto concentrate-falling asleep during classes or other places-feelings of moodiness and evendepression
How much sleep I need?
Most teens need about 8½ to more than 9 hours of sleep each night. Getting theright amount of sleep is essential for anyone who wants to do well on a test orplay sports without stumbling. Unfortunately, though, many teens don't getenough sleep.
5 Ideas for BetterSleep
1) Be active during the day.
2) Avoid alcohol and drugs
3) Say goodnight to electronics
4) Keep a sleep routine
5) Expect a good night's sleep
Everyone has a sleepless night once in a while. But if you regularly havetrouble sleeping and you think it's affecting your mood or performance, talk toyour doctor.