Sleep Well - Ep 4: Warm up to cool down

Get comfortable, let go of the cares of the day and take a sonic journey with Dr Michael Mosley. In this new sound-filled podcast series, designed to help you drift off, each episode focuses on a scientifically proven sleep technique and takes a deep dive through some incredible sleep-related bodily mechanisms.

Discover a simple hack for the temperature-related, sleep-preparing systems of the body. Plus dilating blood vessels, shapeshifting and taking a hot bath.

Guest: Anna Wirz-Justice, Emeritus Professor at the Centre for Chronobiology at the University of Basel, Switzerland.

Producer and Sound Design: Richard Ward Assistant Producer: Gulnar Mimaroglu Editor: Zoe Heron A BBC Studios production for BBC Radio 4.