Unless you are a maxed out world class elite bodybuilder who VERY SPECIFICALLY needs to bring up certain muscle groups, you DO NOT need this level of isolation If you have 15 inch arms and a FFMI of 22 you DO NOT need this level of isolation. I promise you your body is begging you to just use all your muscles to mobilize because you need to grow EVERYWHERE!! Focusing on this level of isolation when you are small will set you up for failure in the long run So what’s the real reason these little f