Long spells of bad night sleep do not only put you at the risk of developing day-long tiredness, crankiness or distraction but also lead to compulsive Facebook checking too, find researchers.The team from University of California-Irvine demonstrated that lack of sleep – in addition to affecting busy college students’ moods and productivity – leads to more frequent online activities such as browsing Facebook.“When you get less sleep, you’re more prone to distraction. If you’re being distracted, what do you do? You go to Facebook. It’s lightweight, it’s easy, and you’re tired,” said lead researcher and informatics professor Gloria Mark.The findings show a direct connection among chronic lack of sleep, worsening mood and greater reliance on Facebook browsing. Mark also found that the less sleep people have, the more frequently their attention shifts among different computer screens, suggesting heightened distractibility.Sleep deprivation can cause workplace mishaps and make drivers fall asleep.