Igf lr3 dosage frequency on training vs rest days Peak week recommendations for bodybuilders: an evidence based approach BMC Sports Science, Medicine and Rehabilitation Springer Nature Link IGF 1 DES for Bodybuilding: Dosage, Benefits & Side Effects 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