People also say you can’t deadlift and squat on the same day.
so… that would be inconsistent with workout A of Rippetoe’s program…
You cannot just workout any muscle that you want in one day… A fact or a myth?[/quote]
It depends on a couple factors.
Beginners (such as yourself) can definitely get away with doing squats and conventional deads on the same day (doing full body programs) because you really aren’t lifting enough weight to over-stress your lower back or recovery systems.
Even more advanced lifters could do both deadlifts and squats on the same day, providing that they didn’t try to max on both lifts (maybe one heavy and the other for higher reps, or both with lighter weight and higher reps). It just isn’t the preferred method of most if building muscle is the primary goal.
As far as the split you mentioned, once again, you can theoretically combine any body parts into the same day.
“Push/Pull” splits have you doing back, biceps, forearms, and glutes and hamstrings in one workout and chest, shoulders, triceps, calves and quads in the other.
“Upper/Lower” splits have you doing chest, back, biceps, triceps, shoulders and forearms in one workout, and quads, hamstrings, glutes, calves and possibly hip abductors/adductors in the other.
Other successful splits include:
“Push/Pull/Legs” (hopefully pretty self explanatory),
body part splits (some examples)
-Chest/Back, Biceps/Triceps/Forearms, Quads/Hamstrings/Calves, Shoulders/Traps
-Chest/Triceps, Back/Biceps, Shoulders/Abs/Forearms, Legs
-Chest/Biceps, Shoulders/Triceps, Back/Hamstrings, Quads/Calves/Forearms
-Chest, Back, Arms, Legs, Shoulders/Traps
Once again those are only examples. You could also combine body parts splits with full body workouts.
Really the only limiting factors would be energy, ability to recover and time. Yes, injury could also be a concern, but if you know what you are doing you should be ok.
Everyone is different, so different people will have different preferences as to what split they utilize.