Very busy right now... but don't worry about this thread. Both Antonio and I have lots more we want to say.
In the meantime, here are a couple of links to my posts from the 2003 Hadd Approach thread. A number of runners have emailed me in the past few days saying they cannot find a link to this document...
I don't have a copy myself, so all I did was google "Hadd Approach" or "Hadd Lactate Threshold" and found these.