FACTUAL

THE TRUTH ABOUT SLEEP, BBC, THURSDAY 9PM

Medical masochist Dr Michael Mosley, suffers from terrible insomnia, so he is highly motivated to pick the brains of world-renowned researchers and submit himself to their tests. Some experiments can be replicated by viewers using a spoon, a watch and a tray, to establish whether or not they are sleep deprived) but spending a night in a house made of glass will be beyond the reach of a tired audience.