While not the most editorially sound piece of work (e.g. I lost count of the numerous instances of loose when lose was intended), this quick read definitely piqued my interest in committing to bodyweight training. Mark provides plenty of functional exercises that are sure to increase anyone's fit...
It is a little odd to me that the author seems to want the reader to do no cardio, but his point is you lose fat faster with more muscle than with cardio. He takes it a little far. I have followed his beginner progam, and I gotta say, I'm impressed. I have been able to adapt exercises to my lame ...