A National Sleep Foundation survey
carried out in Washington found that children who left electronic
devices switched on whilst they slept had on average one hour less
sleep a night. 

Researchers found that technology
had a direct impact on the amount of sleep achieved by the school
kids (aged 6-17), with 72 per cent of them having at least one
electronic device in their bedroom whist sleeping.

According to numerous studies,
backlit electronics emit a light which can prevent people getting
to sleep or staying asleep.

Dr Jill Creighton, Assistant
Professor of Pediatrics at Stony Brook Children's Hospital advised
that; "The burst of light from a phone can break a sleep cycle. The
hour before bed should be a no-electronics zone." 

Creighton suggests a traditional
alarm clock should be used in place of a phone. She also recommends
that electronic devices should be put away at least one hour before
bedtime and be charged somewhere else other than the

For those children who find it
difficult to part from their technology, researchers suggest
reducing screen time by at least 30 minutes a week, the suggested
amount of time in front of a screen a day is 60 minutes.
Researchers also recommended that for every 30 minutes that the
kids spent glued to the screen, they should do another 30 minutes
of exercise to combat it.