Where I purchase my peptides: https://www.nord-sci.com/ref/4/
A Simplistic view of peptides:
Imagine a brick building is your lean tissue (muscle/tendon/ligament)
Imagine each individual brick is a protein that makes up your lean tissue
Imagine a peptide as the cement mix that makes up the bricks (proteins).
By injecting peptides near injuries, we can repair lean mass rapidly. We’re providing the raw materials to rebuild our building (aka our bodies).