BFL can be pretty intense. i just finished training someone on the program, (he liked the program so we stuck to it) and it is decent. he worked hard and we kept the intensity just as the program dictated. he gained some pretty good muscle and dropped tons of bodyfat.
the only part i didnt like was the "high point" or superset part. i wanted him to have a bit more volume per bodypart. cool thing about finishing with it was, when we went on the "nate for life" training, he was begging for the BFL again. hehehehe. so 3 months on that program, he took away some from it and then plateaued, now ill take him further.......
MUAHAHAHAHAHAHA!