Read the text and fill in the gaps with the right phrase. There is ONE EXTRA phrase you don’t need to use.

Sleep well
Do you have difficulty waking up in the morning? Do you find it hard to concentrate in class? Does your mood change often or ... without a reason? Then, maybe you are not getting enough sleep.
Most teens need about 8 to 9 hours of sleep each night. This is necessary for anyone ... or play sport and not to feel exhausted afterwards. However, many teens usually go to bed late. This may be because the hormone ... at night during a young person’s teenage years.
In some schools, middle and high school classes start later ... . If your school doesn’t do that, ... . Relax your mind, avoid drinks with caffeine and ... before you go to bed. This will help both your body and mind work better!