There are a couple of biceps training mistakes that prevent many bodybuilders from achieving the arms muscle growth that they deserve.
These mistakes are:
Biceps Training Mistake #1: Too Much Weight.
Biceps Training Tip: Check the ego by the door and use a weight that allows you to use perfect form and to fully contract the muscles as you lift the weights in order to maximize biceps stimulation.
Biceps Training Mistake #2: Too Many Sets
Biceps Training Tip: Limit the number of sets to 6-12. The biceps is a relatively small muscle used in other movements for bigger muscles like the back and the shoulders. Thus, there is no need to perform more than 6-12 sets. If performing biceps after a back workout 6 sets will suffice. If performed any other day you can do as much as 12 sets provided you have a good recovery capability.