I'm a personal trainer: try this workout instead of planks to strengthen your deep core

Try these four different exercises instead ...

I swapped crunches for this abs exercise and my core feels stronger already

Are barbell roll-outs the best abs exercise you’ve never tried?
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This 10-minute seated ab workout is a game changer if you sit all day – no mat, crunches or floor space required

Hours at a desk and no room for a mat do not have to mean a weak core. This 10 minute seated ab workout turns any chair into ...