LOL, please stop.
You did read the part about IV administration? Do you know how rapid that is?
even with IV , sure it gets into the blood instantly, but how long untill the GH is interacting with receptors, how long untill those receptors turn on genes and induce localized growth factors, how long for those to take effect on protein metabolism?
people tend to think things happen instantly in the body when in reality it doesnt work that way.
honestly, trying to "time" your drug intake is for the most part a fruitless effort. doesnt matter when you take you GH, even if it did wrk insantaneously, which it doesnt, mainly because it stays active for something like 18 hours anyways.
"shoot the GH post workout"=broscience at its best