A renowned sleep expert Dr Neil Stanley has reviewed 30 years of academic sleep research and found that 75 per cent of people in the west suffer from low-grade exhaustion because they cannot wind down properly.
Dr Stanley has coined a new phrase, semisomnia, to describe the condition.
Like many people, Heidi is suffering from the effects of modern society's non-stop nature, and she is also struggling to separate her work and home life - what I call the "Blackberry-Bushed" cause of semisomnia.
It was Dr Stanley who last year identified semisomnia, a form of low-grade exhaustion linked to our inability to switch off (as reported in Good Health).