It all started with this story:

http://news.bbc.co.uk/1/hi/health/7953197.stm

then this blog: http://frank.kinlan.co.uk/

A bit more googling and I stumbled over these two blogs – top honours in my motivation go to Gaz and Toby,  these guys just inspire and stir something within your soul with nearly every post.

http://theamazing39stonecyclist.wordpress.com/

http://www.fatcyclerider.co.uk/