Four in five Americans check their phones within 15 minutes of waking, and 79% keep that device on or near them for 22 hours each day. As author and entrepreneur Nir Eyal points out, these devices have the human race hooked - but why? We sat down with him to find out more.

Are you struggling to catch those ZZZs? Always hitting snooze? The latest update from Apple could be the answer to your midnight prayers. iOS 9.3 is set to include a ‘Night Shift’ feature that adjusts the colour balance of the screen after sunset to make it easier on your eyes before you go to sleep.

In the 50s we used to sleep eight hours a night. Nowadays the average is six and a half. Why have we become less keen on a proper night’s keep? Does our modern lifestyle promote sleep deprivation, meaning we’ll stay awake as long as it takes to consume as much online as possible?

The number of sleep-deprived people in Britain has risen by 50% since the start of 2013. Researchers believe the shift could be related to the use of smartphones and tablets before bed, with studies showing that 80% of Brits use smart devices directly before sleeping.