Yeah it's quite pathetic. Im on my first attempt and im now on hmmm 16 out of 21. It's piss easy, just don't go on porn.
edits 17 out of 21- Allllllmost there. Although im not sure if this is really beneficial. Ive still be striving to do more things than I normally do I guess...
I'd recommend trying this out though. Definately! After the 21 days im going to have a nice well deserved wank

then try and abstaining for different periods of time. It seems there are peaks, if you get it right it could be beneficial. Just going to experiment a bit I think.