Maybe you are proud of
yourself because you only sleep a little hours a night. 21 ____________
However, are you feeling tiring and sleepy
throughout the day? Do you 22
____________
have a hard time keeping your eyes opening
when you study? Have you nodded 23 ___________
off while reading? If you can answer “Yes” for
any of these, it shows you cannot
have enough sleep. A research shows that most
adults should have seven to nine 24 ___________
hours’ sleep. As for teens, they need even
more. If you don’t always have a good sleep,
you should avoid
drinking caffeinated drinks, such as coffee, tea and soda,
for at least 6 hours
before go to bed. You should also avoid eating big
meals 25.
___________
before sleeping. Eat a big meal
can make you feel sleepy and prevent
you 26. ___________
from sleeping good. You
should build a healthy sleeping
environment. 27.
___________
With the light on, can you have a good sleep?
Of course yes. So, you’d better 28. ___________
keep your bedroom dark and cool. You should
avoid using electronics before bed.
The light from electronics can keep you from
falling sleep. Try reading 29.
___________
books or
listen to quiet music instead. Please get enough sleep from now on.
30. ___________