Brandon Combs calls himself a vampire. But the 31-year-old Avon resident isn’t sporting pointy teeth and a rivulet of blood leaking from his mouth ” he just mimics their night-owl sleep preferences.

Insomnia is an ancient preoccupation and modern obsession. Its effect on our mental health and wellbeing can be dramatic. In Australia, the financial cost of poor sleep is an estimated A$26 billion a ...