what can you digest?sleep at very late night OR wake very early morning?

@shnsun (196)
July 8, 2009 2:23pm CST
I like sleeping at late night. I can stay awake whole night if i am told to do or i have urgent work but after i sleep i can't get up early morning. Like in exams, i can stay reading upto 2 or 3am at night but i can't get up early even if i sleep at 10pm. What can you guys do more? sleep at very late night or wake very early morning?
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