I did this last year, and am doing so again. 2 years ago I heard about this and thought it sounded like a great organization and amazing cause.
Also I needed to prove to myself I could do it so I signed up, after one of if not THE hardest thing I have done since I got out of the marines.
I decided I am a glutton for punishment so I signed up again. Here's hoping I keep all my toenails this year