I just started the back program from Iron Dog 188 and had a question about what I should do?
It say for exercises:
Wide grip pull-up to sternum 4sets A.M.R.A.P.
Close grip chin-up 4sets A.M.R.A.P.
The question: I can only do reps for Wide(7,4,3,3) Chin(4,3,3,2) using my own bodyweight. Should I use one of the assisting machines and if so what should be the rep range that I should try to be shooting for to get the best workout ?