Clare Balding joins Christina Edwards as she returns to her childhood home in Greens Norton, Northamptonshire, to retrace the walk she took most nights as a teenager, when suffering from anorexia. Christina lived with her mother in a small cottage on the village green. At seventeen Christina stopped eating and as she explains to Clare, as hunger would wake her in the middle of the night, she'd slip out of the house, always accompanied by their dog Jamie and set off on a long walk around the village to try and tire herself out and soothe her mind. Jamie would never leave her side as she strode across the fields and along footpaths, always listening to the same album on her Walkman, The Waterboys, This is the Sea.

If you need support with eating disorders, help and support is available. Visit the BBC Action http://www.bbc.co.uk/actionline/a-z

Producer Lucy Lunt.