sLeeP aFteR subOh mewarisi kePaPaan, sLeeP aFteR aSaR mewarisi keGiLAan (the truth about melatonin and circadian rhythm)

assalamualaikum and a very warm greetings to evryone... 

note: i'll promise to make it easy 4 evryone to understand yerr... i'll try my best to use less scientific term, n more lay term...

soo.. this is the story: ehheemmm!! in islam, we r alwys advised by 3 things:

1. dont sleep after suboh!!! nnt mewarisi kepapaan...
2. dont sleep after asar (or before maghrib)!! nnt mewarisi kegilaan...
3. n if possible, try to hv a short nap at noon... (the 3rd one i'm not so sure, but as a malay, it is one of our race's habit.)

i'm sure that many of us keep on questioning... y oh y??? y musnt we sleep afte suboh?? (sedangkn dats the rite time 4 sleep)... y musnt we sleep afte asar... penat ni weyy... study all day long.. y cannot tido2 4 awhile r?? n most probably y must we take a nap during the aftrnoon?? i'm busy lahhh!!! dont hv time lorrhh...

these may give u some reasons y must we obey these 3 advise... esp. as a muslim or maybe as a human itself...

this issue can be discussed in either the islamic perspective, or maybe scientific perspective. n this post is dedicated to study these 3 advice in a scientific perspective (briefly off coz)... so lets get started:

first, we hv to noe 2 things... what is MELATONIN... n wat is CIRCADIAN RHYTHM...

Melatonin 

in short, melatonin  is a hormone... known by the scientist as the "hormone of darkness" (mcam scarry smacam je kn??) in other words, this is a hormone responsible 4 our sleeping bhavior n also our sleep/wake cycle.. it is secreted by a gland noen as, pineal gland... the picture below show us where it is situated...

melatonin is noen to b light-dependence.. wat does it means??? it means dat increase or decrease of this hormone is mainly stimulated by light... in such way dat:

1. during the day: it decreases... (bcoz of inhibited by the blue ray of the light spectrum, from our pglihtn off coz)
2. during the nite: it increases... as the "darkness" increase... peaks in the middle of the nite, n slowly decrease during the 2nd half of the nite r 2/3 of the nite...

Circadian rhythm

also noen as "sleep/wake cycle" or the "biological clock of the body"... this circulation vary from 1 person to another, depending on our bhviour, habits, n bla bla bla... dis cycle is conducted by our central nervous system n also synchronize by melatonin... this unique cycle starts n end tepat-ly in 24 hours duration...

in circadian rhythm: 

1. melatonin is secreted around 2100
2. n it stops completely around 0730

we said dat melatonin n circadian rhythm stimulated by light... so how can dis thing happen??? it is as simple as: 

 

haaaaa... amazing isnt it??? (subhanallah...).. by just looking at the light... this will stimulate both melatonin n circadian rhythm.

sooo... now we noe wat is melatonin n wat is circadian rhythm... now lets go the main poit!!...

dont sleep after suboh!!! nnt mewarisi kepapaan...

soo.. lets look at this 1st case... during suboh, the level of melatonin is decreasing (but does not stop completely lagi...) so what will happen if we SLEEP afte suboh??? 

 

our melatonin level will INCREASES n delay the stoppage of melatonin secretion totally... dis is due to less "pendedahan" toward light...

effects: we will bcome more lazy, feel sleepy in the morning, makes our desire to sleep increases... this is due to our circadian rhythm is delayed  n the melatonin secretion stoppage is delayed...

n bcoz of this effects... we can conclude that:  sleep afte suboh mewarisi kepapaan...  we can say that this particular person will maybe: late 4 work, or worst malas nk kerja terus... (ish3... -__-!)

dont sleep after asar (or before maghrib)!! nnt mewarisi kegilaan...

ok now... the 2nd case of the day... what actually happen??? when we actually trigger the secretion of melatonin to be VERY EARLY!!!..

 

how cud this happen??? well, we noe that we need light to inhibit melatonin secretion... n when we sleep, we actually disable light to inhibit melatonin secretion... therefore, melatoni levl wud b VERY VERY high!!!...

effect: too much melatonin will coz drwsiness (kpeningn, ketidaksedaran, kemengantukan yg sgt melampau!!) n in this condition, we can evn fool or make fun this person wfout he/she realising it... wow... but please dot do it ok... we r good people... isnt it??

threfore: dont sleep afte asar!! bcoz ur really2 mewarisi kegilaan... 

a short nap at noon...

well, at 1st, back in the old days, this action is act. a habit of many people in this world... until recently, nobody wud nap a lil bit during the noon... they gv n xcuse such as: work3!!!... or naps r 4 babies... or gotta study n strive n etc....

but the truth is, scientific results shows that, taking a nap in the noon really boost ur energy, decrease stress, n it doesnt effect circadian rhythm at all!!... n due to this, scientist nick-named this nap as "power-nap"... (wow!!..)

in a nut shell, i hope that we can same2 follow these 3 advices:

1. dont sleep after suboh!!! nnt mewarisi kepapaan...
2. dont sleep after asar (or before maghrib)!! nnt mewarisi kegilaan...
3. n if possible, try to hv a short nap at noon...

i apologize if theres any mistake in this post,.. like i said prev.ly,, it is juz a brief post,... not too long (i hope)

n not too short (koWt)

please tell me if theres anything wrong wif this post, or if theres anything at all... thanx soo much 4 reading n hv a happy eid al-adha!!! selamat ari raye sume!!