Very interesting article from the Norwegian University of Science and Technology: Original article is at http://www.ntnu.no/news/hard-workouts-reduced-fertility, I copied the text below as I don't know how long the article will be up for. Hard...

I've been cycling reasonably regularly since that first post-Timmy O, if it's possible to say that after three cycles. The next cycle I O'ed on CD44, after *nine* days in a row of EWCM. I did start temping because I had a couple of days of EW at...