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Will extra sleep improve work efficiency in DHSZ?

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Which year group are you in?
year 10
year 11
year 12
year 13
IG1
How many hours of sleep do you usually get every night?
less than 5 hours
5 to 6 hours
6 to 7 hours
7 to 8 hours
more than 8 hours
How often do you feel sleepy or tired in the first period after lunch?
very often
often
sometimes
seldom
never
How effective do you think a nap will be at helping you to stay well-concentrated in the afternoon?
very effective
somehow effective
not effective
not sure
What is your parents’ attitude about taking naps when you were at primary school or middle school?
encouraged you to take naps every day
wanted you to study more instead of taking naps
didn’t care