You improve at doing a thing by doing the thing, not by doing other things.Would adding sit-ups into my workouts help build core strength for the press? There's nothing in SS about sit-ups. My gym has a decline sit-up bench (I think that's what it is called). This may be better for a separate thread, but I have been wondering if there are other things I could/should be doing in the gym besides SS? After all I am paying all that money but only using a few of the toys they have.
If there is equipment in the gym you'd like to try, by all means, try it out. Kettlebells and cable pulleys can be a great support assist. Pull ups and chin ups is imho the single best addition to any program.