Sleep trackers keep insomniacs awake

Sleep trackers are leaving some insomniacs so anxious that they are lying awake all night, sleep experts warn.

Designed to monitor and even improve sleep quality, smartphone apps and wristwatch technologies like the popular Fitbit device are actually exacerbating the problem for people with a sleep disorder.

Dr Siobhan Banks, senior researcher at the Sleep Health Foundation, says it’s important to realise their accuracy is often questionable.

“Anxiety about not getting enough sleep can lead to