4. Sleep

Evidence-based, information-rich and full of smart tips and techniques, How To Have A Better Brain delivers a practical and optimistic guide to boosting brain power throughout our lives.

Drawing on the latest neurological research into protecting and preserving cognitive function, journalist and broadcaster Sian Williams, currently studying for an MSc in Psychology, investigates the best ways to avert, and in some cases even reverse, mental deterioration.

In this episode Sian analyses the importance of sleep to brain health with Professor Angela Clow, Dr Hannah Critchlow, and neuropsychologist Dr Catherine Loveday and her mum, Scilla, a former Consultant Psychiatrist who started keeping a sleep diary to combat memory loss.

Producer: Dixi Stewart

First broadcast on BBC Radio 4 in August 2015.