Precisely because of what has been explained before: the need for more secondary and isolation exercises and for many, pre-fatigue and specific exercise sequencing which in itself requires two to three exericises and has produced great results for many. So the need for such sequencing for numerous exercises makes it unmanageable to do so in sessions for a particular body part too close together.
And as I’ll say again, which I’ve said before in this thread and I’ll likely repeat over… and over… and over again (!): just because a specific body part is trained once DIRECTLY once per week, that DOESN’T mean it’s not being stimulated at all throughout the week! How many times does this bear repeating?! If one trains chest and then trains shoulders two to three days (nearly always trained with an overhead press variation for anyone who knows what they’re doing) l, then the chest, delts, and tris twice in four days! If one trains back one day and then three days later on leg day does stiff legged dead variation for hams, then the back and hams are trained twice in four days!! Many on here are strong enough to do stiff legged deadlifts with 315-plus for reps or dumbbell stiff legs for with 120s or heavier. Anyone do that and not feel an enormous pump in your traps and Lats?
Do these protein synthesis and frequency zealots think think body parts fall asleep while others are directly trained?!
Do you think the biceps are taking a nap while rowing or chinning?!
Creativity in a split goes a long way!
And while we’re at it, even though we’re on a bodybuilding forum. Anyone see the routines of some of the best powetlifters and bench specialists of all time?! Quite a few trained lifts and body parts infrequently and besides their work for the lifts, their routines looked no different than splits. But then many will counter, “they’re genetically blessed and they were on drugs.” Well, does everyone think these men weren’t intelligent enough to know that if something worked better (e.g., increased frequency) they wouldn’t do it?
Maybe I’m ignorant. Who knows?
Yes, many bodybuilders have trained in goofy, excessive ways. But there were many drug aided ones who didn’t. And to think they were all genetically blessed goofballs who put no thought into anything is disingenuous. Anyone can Go look at old training videos of Rusty Jeffers, Mike Francois, Dorian Yates, and Jay Cutler with some voiceovers of them speaking and motive they had reasoning in what they did.
Your post is good and I don’t mean to come across as snobby at all, but I’m speaking generally here.
Besides, do the frequency freaks look so much better as a group than those who aren’t? Same goes for powerlifting. Was anyone who trained more frequently that much better than Ed Coan, Anthony Clark, Dave Waterman, Glen Chabot, and Kirk Karwoski. Who knows?