https://www.health.com/sit-ups-vs-crunches-11863768
Sit-Ups vs. Crunches: Which Exercise Builds Stronger Abs?
Sit-ups and crunches both target your core muscles, but work differently. You can use both exercises to build strength, endurance, and control.
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https://www.shape.com/sit-ups-vs-crunches-6889573
Which Abs Exercise Is Best — Sit-Ups vs. Crunches?
Experts weigh in on which abs exercise is better for core strength, sit-ups vs. crunches. Learn the benefits of crunches and sit-ups here.
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