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Sit-ups can be a great way to strengthen your abdominal muscles that sit around your stomach. But they can quickly get repetitive and its easy to accidentally lose your form, so when boredom strikes, ...

They may look similar, but choosing the wrong move could slow results—or put extra stress on your spine.

They’re often lumped together as “ab exercises,” but crunches and situps aren’t the same thing — and choosing the right one can impact your results (and your spine). So, if your goal is stronger abs, ...