When journalist, Ed Cooper, approached me for help with his sleep, he described himself as poor sleeper - he wasn't sure he'd ever slept well. His challenge was to follow my 'expert' advice, and to use an Oura ring to track whether changing his daily habits would transform his sleep.

In an age of wearable tech, the paper sleep diary is often neglected, yet it can be one of the simplest tools to improve your sleep patterns

I have a love-hate relationship with wearable sleep trackers. I absolutely love that technology is being used to shine a light on sleep;...