Do you mean one body part per workout?i like body part splits , gives me more time to recover and it suits me better
I would have thought legs/push/pull is pretty much full body, if you're doing compound exercises
No matter which method is used I've always preferred to do my workouts in blocks rather than mixing it up through the week.
Say, 3 or 4 months on a particular routine, this way it's easier to gauge the progression and much easier to log.
I think it's a good thing that your wife worksout with youI agree - I generally will do something for a while.
My wife has started training with me though so I have to be more flexible to work in with her, e.g. I've got her on an upper/lower/upper/lower, but she could only make it for lower/upper/lower so i then did 2 days of push/pull seeing I had 2 days spare.