Seb Falk as Gherkin Man
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London Marathon wind worry for Cambridge Gherkin Man

10 April 2014 Last updated at 13:18 BST

A Cambridge PhD student aims to stand out from the crowd when he tackles the London Marathon on Sunday - and avoid low bridges if he can.

Seb Falk has made a video of his training programme as Gherkin Man, which is helping to raise money for Parkinson's Research. His father has had the condition for 15 years.

He has already raised £8,000 and hopes to reach £10,000.