A CSCS trainer shares 5 bodyweight core exercises after 55 that build real strength, no long plank holds needed.

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Add Yahoo as a preferred source to see more of our stories on Google. Five moves and a set of dumbbells are all you need to torch your midsection and, over time, strengthen your core. This routine ...

Enter any gym, and you'll see the same core workout: crunches, situps, ab machines, and endless twisting exercises. The logic seems obvious—if you want stronger abs, more visible abs, you train them ...