Psychiatrists estimate that the number of people who have become digitally dependent has risen 30 per cent over the past three years.

(Hospitals in the UK now offer technology-addiction services. Psychiatrist Dr Nerina Ramlakhan, author of Tired But Wired, said “People are getting locked into a cycle of technology at work, and then surf the net or use Facebook to unwind. They become exhausted, but cannot switch their brains off.”

If you’re worried about this, log off the net, switch your computer off, go home and go out for a walk with the family – oh and leave your smartphones at home.)