Originally Posted by big

Well I don't ever like to say "bad way to train", as if it's working for you, then it's not a bad way to train. However, if it isn't working, then you need to change something.

IMO... if you are planning on doing 3 sets of 12, then pick a weight that you can ACTUALLY do 3 sets of 12!! Don't pick a weight where you're getting 12, 9, 7 or 12, 12, 10 or whatever. Pick a comfortable weight, and then add to the bar each session. That's the only real way you can tell if you're making proper progress.

It sounds like you're doing the standard "i'll do 3 sets and go to failure on every set" approach... which may well work for some, but for 90%+ of people, it is a sure-fire way to hit a brick wall fast.