You can still listen to BBC iPlayer Radio via your browser by visiting bbc.co.uk/radio
5/5 Beds are the places we withdraw to, away from currents of society and community.
4/5 Paul explores the uncanny world of sleep disorders and sleep talk.
3/5 In deep sleep, where the places we go are unlimited - does dream interpretation matter?
2/5 Paul explores the dead of night.
1/5 Why do we sleep, and why do many of us find crossing the threshold of sleep so difficult?