Insomnia and me: Robert Muchamore

'The rush of creative energy beats anything else I've experienced. I have been awake for more than 50 hours'

Insomnia and me: Jilly Cooper

'The only thing worse than not sleeping is rereading something I have written in the day and it making me go to sleep'

Insomnia and me: Naomi Alderman

'You can't be resting, my mind says, when things are so serious. Things are going wrong without you. Wake up!'

Insomnia and me: Chris Cleave

'I do sometimes wonder why the nocturnal me seems to write on such strong acid'

Insomnia and me: AL Kennedy

'I fret that this is the least suitable night for me to be sleepless. Of course it is. It always is'

Insomnia and me: Chuck Palahniuk

'Ambien helps me sleep more nights than I care to admit – although I'm uncertain about the quality of that sleep'

Insomnia and me: David Baddiel

'Insomnia, like depression, can operate as a boast, a way of presenting oneself in public with the subtext: I am tortured and have depth'

Should I get up earlier to lose weight?

Luisa Dillner: Recent studies have found that it is not just how long we sleep that can affect our weight, but when we wake up. Should we all be jumping out of bed at dawn?

App could help people shape their dreams, claims psychologist

Dream:ON iPhone app plays a soundscape a few minutes before the user's alarm goes off

How to be a smarter reader

There's plenty of advice out there to help you read more – but what about how to get more from what you read? Here's how