Mobile Smartphones Damaging Sleep, Productivity: Study

Switching off your mobile at 9pm could make you far more productive in work the next day, researchers have found.A team the University of Washington say using your phone late at night can seriously damage your sleep - and your performance at work the next day.They advise employees to switch off - or risk being 'less engaged' at work the next day.

http://www.dailymail.co.uk/sciencetech/article-2542963/Switch-mobile-9pm-Using-mobile-9pm-seriously-damage-work-day-researchers-find.html