Should go to bed no later than 11: 00 pm and should sleep at least 6 hours to 8 hours per day to wake up to fresh, clear and not sleepy time learning in the classroom.
Should go to bed no later than 11 hours, and sleep at least 6 hours to 8 hours per day in order to wake up refreshed. And not sleepy time in the classroom.
Should go to bed not too 11 o'clock and should sleep at least 6 hours to 8 hours per day to wake up is cheerful. And not sleepy time study in the classroom.