The major differences between sit-ups and crunches — and which one is best for you

Both sit-ups and crunches can help target your core muscles, but there are key differences between the two ab workouts.
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Forget Sit-ups! 3 Exercises That Effectively Train Your Abs

For a long time, traditional sit-ups were considered the best bodyweight exercise for strengthening abdominal muscles.
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No, not sit-ups — strength and conditioning coach says ‘this is the best abs exercise you’re probably not doing’

Coach Daniel Herman knows a thing or two about training strong core muscles, and he’s got something better for you than sit-ups, crunches or Russian twists. You might already know it, but he’s got a ...