Sleep Debt

Recently I have been sleep­ing a lot. On week­end this has been my sleep­ing pattern

  • wak­ing up at 10:30AM in the morn­ing get­ting some chores done.
  • have lunch @ 2:15PM try to watch a movie or read something.
  • And before I could think of some­thing feel like some­one singing a lul­laby and soon fall asleep just to wake up @6:45 PM in the evening.
  • Still feel­ing sleepy think­ing about get­ting some­thing quick to eat (like pizza) and fin­ish this blog before some­one sum­mons me back to sleep.

In one of the arti­cles they say you get the best sleep at cer­tain hours of the day. Have a look at the image below the deep sleep cycles are shown in deep red color with the time lines shown on the y-axis.

Hypnogramme Sleep Debt

There has been a lot of sci­en­tific research done on sleep and I don’t want to go into that. But here I was more than inter­ested to know why I have been sleep­ing so much lately. I stum­bled across some arti­cle off course in my semi conscious/awakened state ( so please excuse me if my spelling or some part of this arti­cle does not make any sense.. you know why ; -) ).

So here is what I found I had a sleep debt, the effect of not get­ting enough. And why did this hap­pen or to be pre­cise how this is hap­pen. This is how it happened.

  • On Mon­day this week I got engrossed in a book and ended up remain­ing awake till 2:30 AM in the night. Only to wake up at 7:45AM in the morn­ing. So only 5 hours of sleep.
  • On Tues­day had a call with off­shore. It went for an hour. Before I could hit bed the clock had already ticked 12:00 mid­night. So I had 7 and half hours of sleep.
  • Wednes­day caught myself chat­ting with an old friend late before I could real­ize that it was already 1:30AM. So on wednes­day only 6 hours of sleep.
  • Thurs­day I though of not stay­ing awake but an inter­est­ing dis­cus­sion took, after that a phone call to an old friend, very late din­ner had me stay awake till 12:30. Still man­aged to pull in 7 and half hours of sleep.
  • Fri­day you know no need to ask what hap­pened, its the Fri­day night stayed awake till 2:30AM. Again thought of sleep­ing late next morn­ing with no alarm. Guess what some one was call­ing me up in the wee hours (glad that I had my cell on vibrate.. but vibrate mode still makes a lot of sound if you want to sleep) still man­aged to sleep till 10:30 next morning.

Stud­ies says that a nor­mal adult needs 7–8 hours of need daily ( see the chart below for more details). So evi­dently I was sleep deprived. I needed to sleep for 40 hours ( 5 days X 8 hours) this week but I ended up sleep­ing only for 34 hours this week. So I had 6 more hours to cover up for.

Age and condition Aver­age amount of sleep per day
New­born up to 18 hours
1–12 months 14–18 hours
1–3 years 12–15 hours
3–5 years 11–13 hours
5–12 years 9–11 hours
Ado­les­cents 9–10 hours
Adults, includ­ing elderly 7–8 (+) hours
Preg­nant women 8 (+) hours

Now this is only for one week. This has started me to think over the time when my office works is on the peak. Now 6 hours of sleep depri­va­tion if I keep the same sched­ule over rest of the year might increase to 312 hours/year ( assum­ing that I am not able to cover up my sleep quota on week­ends) . Some­times even trav­el­ing adds up more hours to it or lets say a road trip to get away from the ten­sion of the daily work cycle. Those quick trip with less sleep also ends up adding more hours.

As per stud­ies they say sleep depri­va­tion causes a large debt causes men­tal, emo­tional, and phys­i­cal fatigue. It is unclear why a lack of sleep causes irri­tabil­ity; how­ever, the­o­ries are emerg­ing that sug­gest if the body pro­duces insuf­fi­cient cor­ti­sol dur­ing deep sleep, it can have neg­a­tive effects on the alert­ness and emo­tions of a per­son dur­ing the day.

I don’t wanna think more about the prob­lems right now or my sleep debt, just wanna order some pizza get back to what I was doing few hours ago .. sleep. You can call me sleep­ing beauty for this week, for girls who feel offended by a men tak­ing away their fairy tale title can be happy call­ing me khumb­hakaran (only for his sleep attributes).

smiley sleeping Sleep Debt

 Sleep Debt

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4 Comments

  • That is not true in all cases. In my case, I gen­er­ally require around 7 hours of night time sound sleep. I never sleep dur­ing the day(yes even on week­ends) unless I am sick or some­thing. On the con­trary my sis­ter sleeps around 8–10 hours every day and even more on the week­ends yet seems sleep deprived. My the­ory is that the body knows how much sleep it requires. When it feels that it needs more, it auto­mat­i­cally tells us by signs of tiredness.

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  • Sound sleep is impor­tant sleep­ing through out the day is not. Plus if you see an adult needs 7–8 hours of sound sleep if he does not get 7–8 hours of sound sleep (irre­spec­tive of if he sleep 10 hours) he\she still might seems like sleep deprived. So to fol­low a proper sleep cycle as given in the pic 1 is also important.


    Kevin Rodrigues:

    That is not true in all cases. In my case, I gen­er­ally require around 7 hours of night time sound sleep. I never sleep dur­ing the day(yes even on week­ends) unless I am sick or some­thing. On the con­trary my sis­ter sleeps around 8–10 hours every day and even more on the week­ends yet seems sleep deprived. My the­ory is that the body knows how much sleep it requires. When it feels that it needs more, it auto­mat­i­cally tells us by signs of tiredness.

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  • Renuka Mudaliyar wrote:

    I don’t agree com­pletely to what you say,Just for a sim­ple fact that I have seen who can train their body such that how­ever later they sleep they can still kick off early in the morn­ing and be nor­mal through out the day even at work.. they dont feel that they missed out on a cou­ple of hours of sleep..

    I won­der about it how can peo­ple man­age that..but never got to know the mantra behind it…

    Share with em if u know any of those :-)

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  • Renuka I was refer­ring to gen­eral peo­ple or masses not some­one like a yogic guru who can even live with­out food for 1 or 2 years. Or in you case only sleep 4 — 5 hours a day and stil be good to go for the com­plete week.

    Apart for this the sleep depri­va­tion does not hap­pen in 1 week or two week its shows its side effects grad­u­ally. There is no such thing like a quick reac­tion for sleep deprivation.


    Renuka Mudali­yar:

    I don’t agree com­pletely to what you say,Just for a sim­ple fact that I have seen who can train their body such that how­ever later they sleep they can still kick off early in the morn­ing and be nor­mal through out the day even at work.. they dont feel that they missed out on a cou­ple of hours of sleep..

    I won­der about it how can peo­ple man­age that..but never got to know the mantra behind it…

    Share with em if u know any of those :-)

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