unit6AB

2022-11-11 00:02:5601:08 95

声音简介

All devices'screens give out a large amount of
blue light. That isn't a problem unless you want
to go to sleep. This blue light affects the body' production of the sleep hormone, melatonin,
which can change your sleep patterns, or circadian rhythms. So it isn't just getting to sleep that becomes hard, but the quality of your sleep also suffers. The result is that you can wake up several times during the night, and
have difficulty getting up in the morning.
B :Sleep is food for the brain, so not sleeping well can be a serious problem for anyone, but is especially bad for teenagers, because their
brains are still developing. When you don't sleep well, it can be difficult to concentrate at school
which makes it harder to learn and get good
grades. It can also affect your mood, making
you feel sad or anxious.