The Seven Levels of Race Specific Training

Trevor: It makes perfect sense from a physiological perspective that your anchor point has to be your metabolic fitness but with that said one of the issues that I had to take in consideration with the original levels was you know what is the right number recognizing that it's all shades of gray. Subdividing things into ranges or regions or zones or levels or whatever you want to call them is simply a mental convenience well how far do you go if you set up 15 different levels? Trevor: Ultimately I decided seven was the magic number it's a prime number by the way I could have been right I could havebeen wrong but that's what I settled on because it seemed to me that that