The thing you need to know is, the HELL ain't that far from you.
Having lack of sleep, like your avg sleeping hours are 3~4 hrs per day?
Then I assure you are definitely in the HELL...
p.s. DAMN HUMAN BIOLOGY, DAMN THERMOCHEMISTRY, DAMN ELECTROMAGNETISM, DAMN LINEAR ALGEBRA, DAMN WESTERN PHILOSOPHY, DAMN KOREAN WRITING, DAMN CHEMISTRY LAB!!!
p.p
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