Just got my mc igf today and super excited to start using it. Out of curiosity, I know most use it ED and put it bilateral for muscle groups working, but has anyone ever tried only using it on a struggling body part? Or has anyone tried using on only say arm day or something instead of ED? Or even only injecting in said muscle group ED? I realize benefits of doing ED I'm just wondering if anyone has ever tried to just bring up one body part?