I don't believe gains are that fragile. IGF-1 has a longer half-life. More important is overall surplus (hard gainers need more), nutrition, regular gym time,

I don't believe gains are that fragile. IGF-1 has a longer half-life. More important is overall surplus (hard gainers need more), nutrition, regular gym time, and low stress/catabolism. Normalize cortisol, insulin, and thyroid/HPTA/metabolism.