Experience: I broke my back while sleepwalking

My body was motionless at the foot of the stairs. My knees were drawn up into my chest, my face was bloody and more blood had pooled underneath me

Teenagers’ sleep quality and mental health at risk over late-night mobile phone use

Researchers advise ‘physical boundaries’ over devices in bedrooms after study finds poor sleep associated with phone use linked to depressed moods

‘Working nights, I end up in a strange limbo’: readers on jobs that affect sleep

A study suggests security guards are among those who get the least sleep. We asked you how your work affects your ability to relax, and your health

Who gets the most sleep? Shop assistants in Germany

New research shows that workers there get an average of almost seven hours a night. But how do they compare with people in other countries and professions?

How does your job affect your sleep?

Do you check work emails late into the night? Or do shift patterns mess with your body clock? Tell us if your job makes it difficult to doze off

Air pollution linked to poor sleep, study finds

Exposure to nitrogen dioxide and airborne particles affects sleep efficiency, says medical professor

Bad sleep makes it harder to keep your waistline down

Single poor night can increase appetite and slow metabolism, say researchers

What I’m really thinking: the insomniac

Hypnotists, therapists, camomile tea, drugs, pillows doused in lavender oil – I’ve tried them all, but still sleep eludes me

Looking tired can harm your social life, say researchers

People who have had too little sleep are considered less attractive, in poorer health and less appealing to socialise with, a psychology study has found

‘Fitbit of sleep’: Apple buys night-time tracking firm Beddit

Company attempts to secure place in health market with acquisition of Finnish business specialising in tracking sleep quality, heart rate and snoring