Any of y'all do seated good mornings? Recently started them with holding a dumbbell against my chest, almost cradling it against my shoulders. And I also try to extend my upper back at the top. I really like it. Definitely feel it working some muscles that I don't think I hit much in my paraspinals when I do deadlifts. And for whatever reason, normal good mornings just don't feel right when I do them.
Also, do y'all think doing some isolated core work (planks, deadbugs, situps, etc) on what would have otherwise been a rest day is a good idea or bad? One full rest day a week and one pseudo rest day with just core work. I've heard the core muscles you can pretty much train daily, but I'm wondering about the total effect it has on global recovery. I have a tendency to workout probably more than I should, and as I get older I know I need more recovery.