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.