Slightly Arched Back at Rest, Lack of Ab Work?

I noticed in pictures recently that while standing up straight, my back is consistently arched. Despite my best conscious efforts, it seems like I may have an imbalance where my back is stronger than my core. Honestly, I don’t do much ab work. Seems like that’s catching up to me. I lift weights 3 days per week, broken down by 4 full body (compound) exercises; 2 isolated exercises. Is there a recommended ab exercise I could throw in outside of knocking out sit-ups on a swiss ball?

There’s always going to be some natural arch to your back because there’s supposed to be. If it’s drastic (presuming you don’t want to post a side pic to show what’s what), it may be an anterior pelvic tilt and not specifically about your back itself or lack of ab work - though, of course, fixing that glaring oversight should be a priority.

This talks a bunch about APT, along with some drills to work on everything involved: Tip: Fix Your Anterior Pelvic Tilt, Feel Awesome

As for specific ab work, it’s pretty hard to screw up. Any kind of crunch variation and any kind of static core hold (Pallof press, plank, 1-arm plank, etc.) would be a simple start. Hit abs directly with one of your isolation exercises twice a week and you should get back on track.

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