Most lifters think muscle growth happens during the workout., It doesnt., Growth happens after when repair signals are turned on., Thats where PEG MGF shines., This peptide works at the cellular Mechanisms of IGF 1 Mediated Regulation of Skeletal Muscle Hypertrophy and Atrophy PEG MGF Focal Point Vitality PEG MGF Muscle Repair & IGF 1 Signaling Modulator IGF 1 LR3 The Muscle Building Peptide Everyone's Talking About IGF 1 LR3 is one of the most powerful performance peptides used for muscle growth, recovery, and fat loss. It's a modified version