haiz.. its been a tiring week.. so long never really work hard liao.. now wanna pia but cant last long.. feel so lousy.. used to be able to only slp 6 hours a day or even less when chionging projects or study.. now i think old liao.. haha.. even when i slp 8 hours a day still feel tired.. die.. does it mean tt in five years time, i need to slp at least 12hours a day? haha.. dunno lar..