If I can go back to last year (moon)

if i can go back to last year, i more do sleeping
last year i always sleep late so late school so many.
and my feel going bad

it was not bad to 1~2 day with less sleeping, but more, i didn't fine. i sleep in study time and lunch time, dinner time. i lived change morning and night.

teather and mother told me do not sleep at study time. but it is so hard.

my sleeping time is 3~4 hour at night, and sometime i didn't sleep at night. after time i some mad, so talk strange and my health going bad

after 'test of study abllity' i sleep so many so bad change the good, and i think some if i more sleep early, anything more good at that time.