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show watch find look affect find associate become look have
need need get get upset trick be watch interest watch
New research that it is bad for children to TV, tablet or mobile phone screens before bedtime. Researchers from the University of Colorado that "screen time" before sleeping damages children's health. The researchers at over 60 different studies on how screen time children. They said: "Of more than five dozen studies looking at children aged from 5 to 17 around the world, 90 per cent have that more screen time is with delayed bedtime, fewer hours of sleep, and poorer sleep quality." Screens are smaller and smaller, so children can at them in bed. More than 75 per cent of children in the study some kind of screen in their bedroom.

Children a lot more sleep than adults. Pre-school children 10 to 13 hours, pre-teens should between nine and 12 hours, and teenagers should be between eight and 10 hours a night. The researchers highlighted three main reasons how screens affect children's sleep. First, the light from screens a child's body clock. The light from screens getting into children's eyes before they sleep their body into thinking it still daytime. Second, children often videos of things that excite them or them. This keeps their brain active, so they take longer to sleep. Finally, when children are screens, they are not exercising. Children need physical activity to make them tired.

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