I've swapped crunches, sit-ups and twists for this deep-core exercise

Your core and lower back could benefit from swapping high-impact exercises for this move.

I'm a Coach and Here Are 6 Standing Exercises Adults Over 50 Need to Rebuild Core Strength

A CSCS coach shares 6 standing core exercises after 50 that build strength and balance with no crunches or floor work.
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The 4 standing core exercises I recommend if you can’t do sit-ups

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I'm a Trainer and Here Are 5 Wall Exercises Adults Over 60 Need To Rebuild Lower-Back Strength

Wall exercises for lower back strength from a CSCS to strengthen your hips, core, and posterior chain after 60.