When do you usually go to sleep in the night? welcome discuss!

@Tuanshun (138)
China
June 13, 2009 12:09am CST
hi, i'm wondering when you get sleep in the night. I usually stay up late to sleep, i just can't fall asleep before 11:00pm, how about you? Do you think that's too bad for health. Let's discuss about it.
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