Psychologist Kimberley Wilson and Dr Xand van Tulleken continue their journey around the human body, asking what our insides can reveal about our lives and the world around us.

Taste buds are on the menu for this episode, as Xand delves into how taste receptors are found all over the body, and might have implications for how well we tolerate illness. Kimberley reveals how much of taste is actually down to our minds. Plus, they meet the UK Chilli Queen, a woman on a quest to be the spiciest champion in the world.

Producer: Georgia Mills