Not sit-ups, planks, or crunches: I do this simple Pilates exercise every single day to build a strong and stable core and work on my hip flexor mobility

While exercises like sit-ups and crunches work the rectus abdominis, or "six-pack" muscles, this simple-looking exercise ...
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Less sit-ups, more ‘compound exercises’ — here’s the one abs exercise you can do to strengthen your whole core

Not that fussed about sit-ups? Me neither, so I say sweep them to one side and hit more muscles in one go using the good old do-it-all compound exercise — a multi-joint, multi-muscle move that hits ...
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Mastered the situp? The V-sit takes things to the next level

While ab exercises like the situp and crunch tend to get all the glory, there are plenty of other moves that work the region just as effectively. And there is something to be said for adding variety ...