蜜芽传媒

Graham Easton looks inside himself to find out how he controls his bodily functions.

From eating to excreting, how do these inner senses tell us when we are full?

To find out, Graham visits Dr Slack at his bladder clinic to take part in some "urodynamics".

Producer: Michelle Martin

First broadcast on 蜜芽传媒 Radio 4 in March 2007