Had a late night? Well here's a programme about insomnia and the businesses trying to solve it.

Elizabeth Hotson takes part in what is possibly the world’s laziest gym class, and speaks to bed manufacturers, sleep app engineers and the inventor of a sleep robot.

But does any of these solutions actually work? Elizabeth asks Dr Michael Farquhar, sleep consultant at Evelina London Children’s Hospital. Plus Dr Michael Grandner, director of the sleep and health research programme at the University of Arizona, suggests a cost effective way of curing insomnia. Producer: Elizabeth Hotson

(Picture: Man suffering from insomnia; Credit: chameleonseye/Getty Images)