Planning out what you are going to do in a given workout session is essential to making continued progress. That way you know if a certain routine is beneficial to you specifically or not. No matter how many training routines are written in bodybuilding publications, and who wrote them, remember that different routines work for different individuals. So please keep track of what you are doing, and plan before you go to the gym. Plan what tempo you are going to use for your exercises, how many sets you will do, and how long your rest periods will be.
Breathing is essential to lifting.
You must supply a constant flow of oxygen to your muscle cells. Don t hold your breath. You only deprive your body what it really needs when you lift. Do not ever forget to stretch. It rips apart.