Tuesday, November 6, 2007

am feeling sleepy

Tuesday, November 6, 2007
Messaging my friend late into night, finally falling into sleep to be woken up early next morning by mom, man wat a bad luck, sleep is very much an indispensable thing for me and i have quite a fan following for my rebellious sleepiness in classroom. Once even one of my lecturers mentioned me as an example, ha ha ha those were the days. Well talking bout sleep there are supposed to be two types of them, well its not snoring and nonsnoring, its rapid eye movement (REM) and non-rapid eye movement (NREM) sleep.
In REM, the brain is active and the body inactive, and this is when most dreaming occurs During REM sleep there is loss of skeletal muscle tone, and an active sympathetic nervous system. Also during REM sleep our muscles are paralyzed so that we don't act out our dreams. In NREM sleep, the body is active and the brain is inactive, and there is relatively little dreaming. Non-REM encompasses four stages; stages 1 and 2 are considered 'light sleep', and 3 and 4 'deep sleep'. They are differentiated slence, or "drowsy sleep".Sleep is a dynamic time of healing and growth for organisms. For example, during stages 3 and 4, or slow-wave sleep, growth hormone levels increase, and immune function changes.
Well the interesting stuff is sleep is considered to be related to learning, funny isn’t it how many times have we all been smacked for sleeping now check this out, Many studies demonstrate that a healthy sleep produces a significant learning dependent performance boost. Healthy sleep must include the appropriate sequence and proportion of NREM and REM phases, which play a different role in memory consolidation-optimization process. A study has also found that after sleep there is an increased insight, that is, a sudden gain of explicit knowledge. Thus during sleep the representation of new memories are restructured. Sleep has been directly linked to the grades of students, results have shown that those who sleep less do poorly.
The National Sleep Foundation maintains that eight to nine hours of sleep for adult humans is optimal and that sufficient sleep benefits alertness, memory and problem solving, and overall health, as well as reducing the risk of accidents.A widely publicized 2003 study performed at the University of Pennsylvania School of Medicine demonstrated that cognitive performance declines with fewer than eight hours of sleep.now dats y i sleep so much ;-)

Generally, lack of sleep may result in
aching muscles;
blurred vision;
Cardiovascular disease;
clinical depression;
daytime drowsiness and naps;
decreased mental activity and concentration;
weakened immune system;
dark circles under the eyes;
general confusion;
hand tremors;
Lucid dreaming (once sleep resumes);
memory lapses or loss;
nystagmus (rapid involuntary rhythmic eye movement);
slowed reaction time;
slurred and/or nonsensical speech;
weight loss or gain;
severe yawning;
symptoms similar to:
Attention deficit Hyperactivity Disorder;
Alcoholic Intoxication.

sleep deprivation severely affects the human body's ability to metabolize glucose, which can lead to early-stage Diabetes.Sleep deprivation can adversely affect brain function, it also suppresses growth hormone,also obesity

If u wanna stay healthy just sleep off,sweet dreams


rOhit said...

very good post..
though its been ages dat i slept at in night.. nocturnal u see :P

anywayz it was interesting to read it :)

Ron Lemon said...

hey, nice work :)