On top of that: If you don't build muscle very easily, then you need to be careful with extraneous physical activity. As an ectomorph, I find that I need ALL o

On top of that: If you don't build muscle very easily, then you need to be careful with extraneous physical activity. As an ectomorph, I find that I need ALL of my 4500 daily calories to build muscle. I generally lift 3 times a week with a 4th day of dedicated to cardio at the end of the week. I rotate between 4 week sets of cardio/muscle-building as well. That works well for me. The authors suggestion of doing daily cardio might very well be sabotaging your results.