I'll contribute to the conversation too. I don't train for a pump, I train to get stronger and hopefully add muscle in the process. If you just train for a pump and don't progress and get better each time I think you are pretty much wasting your time.
Leaders are made, they are not born. They are made by hard effort, which is the price which all of us must pay to achieve any goal that is worthwhile. - Vince Lombardi