If...
"Trenbolone greatly increases the level of the extremely anabolic hormone IGF-1 within muscle tissue (2). And, it’s worth noting that not only does it increase the levels of IGF-1 in muscle over two fold, it also causes muscle satellite cells (cells that repair damaged muscle) to be more sensitive to IGF-1 and other growth factors(3)."
Wouldnt users be commonly experiencing improved ROM and things of that nature because of it? To my knowledge, this isn't an occurance.
How much IGF does the average adult male produce?