Few people you’ll come across on the street look like Ryan Emans. His body is heavily modified, from head to toe - including a tongue split that gives it a forked, snake-like shape. These changes weren’t accidental or something he was born with, Ryan chose each modification deliberately as a way to make his outer self reflect who he truly is inside.

Many of us see the body as our only true property. While not everyone chooses to modify their body as radically as Ryan, we find meaning in believing it is ours and ours alone. But our relationship with our bodies raises a deeper question - one that blurs the boundaries of what we consider the self. Is my body me, or is my body mine?

In this episode, Matthew Syed dives into the notion of body ownership and explores what it really means to live in and with our bodies.

With mental health nurse Ryan Emans, political theorist Professor Anne Phillips, and neuroscientist Professor Heather Iriye.

Presenter: Matthew Syed Producer: Julien Manuguerra-Patten Editor: Hannah Marshall Sound Design and Mix: Daniel Kempson Theme music by: Ioana Selaru A Novel production for BBC Radio 4