The body weight is an essential factor limiting the number of pull-ups you can do. In order to benefit from this program at the beginner level you have to “reduce” your body weight to match your strength level.
I suggest one of these three methods:
- Assisted pull-up machine
- Rack pull-ups
- Lat pull-downs
Regardless of the method you choose, make sure you can do 8 to 10 repetitions.