If you read some of the other threads I have commented on about peptides and combinations, I considered hex and mod grf preworkout, and daily mk677 to be the holy trinity of peptides with the lowest negative health effects. In my hypothesis it should not result in organ growth while definitely causing hyperplasia of the musculoskeletal system. So far this seems to be proving as a theory because I am seeing it more and more and those using it who are having their hearts and internal organs examined in various ways are showing no signs of growth.
As I also said in those posts, the reason I think the major spike being during training and directly after is ideal, is because that is when hyperplasia can be directly stimulated and also because constant high levels of GH (such as what you get with multiple doses of GH/hex/ghrp2/ghrp6 daily and using cjc with dac) are shown to cause organ growth, especially cardiomegaly.