How running helped beat depression
A 21-year old girl who became blind at the age of 17 is competing in the London Marathon just a few months after taking up running.
Lucy Edwards from Sutton Coldfield has rare genetic disorder Incontinentia Pigmenti which caused her to lose her sight.
This video has been optimised for mobile viewing on the BBC News app. The BBC News app is available from the Apple App Store, external for iPhone and Google Play Store, external for Android.