Sleep debt

Recently,I'm wondering how much sleep debt have i owed to myself??Since Form 1??After that??Ok,I've no idea as well.I think it's uncountable.Now,I'm still the evening type person.My circadium rhythm is different from others.I sleep late,get up early.Sometimes,I can even stay awake 24-7!!Cool..Anyway,I know it's not good and I've experienced the impacts too.Especially these few days,everyone is so sleepy.Some even slept in class,including me.I was having microsleep for few times in these 2 days.Every lesson seems so boring and I couldnt stop my eyelids from covering my eyes........Ok,I was having a microsleep again....Should get up now.Hey,wake up lady!!!