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 Frontiers Regulation of IGF 1 signaling by microRNAs Mechano growth factor, a splice variant of IGF 1, promotes neurogenesis in the aging mouse brain Molecular Brain Springer Nature Link IGF 1 LR3 does not promote growth in late gestation growth restricted fetal sheep American Journal of Physiology Endocrinology and Metabolism American Physiological Society Powerock Pharma PEG MGF 5mg The GH IGF 1 axis in ageing and longevity Nature Reviews Endocrinology