Currently I am doing research to prepare for a coach presentation I'll be participating in March. The title is 'Busting Endurance Training Concept Myths' and while searching for studies and other sources I came across a few very cool blogs. If you are a geek like me about training, physiology, etc. then you'll like those. they take a very objective approach at evaluating different topics, data and of course question a lot of the anecdotal evidence and dogma we find in the net so frequently nowadays.Check them out!