School students are chronically depraving from sleep, this leave them grumpy and disoriented at school the next day and the culprit is the mobile phone.

Many lose precious sleep because they stay up late night sending text messages or watching videos in internet and according to Andrew Fuller (a researcher for school conducts) research, female students were most and chronically sleep deprived, leading them to lose concentration at school, all because they were the most eager SMS users.

Mr. fuller said lack of sleep could have serious consequences for students abilities to learn, communicate and retain information at school the next day.

The amount of sleep you have directly relates to how much serotonin you have and how vulnerable to stress you are.

Sleep helps consolidate long-term memory, it has a big role in learning," he said Mr. Fuller, who is still writing his second book, recommended banning mobile phones from bedrooms.

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