So, what exactly is it about planks that make them a more effective movement than crunches? Well, one reason is that sit-ups and crunches can be hard on your back. Pushing your spine against the floor can cause lower back pain later on. Additionally, planks don’t just work your core: They work your entire body.Planks require your arms, your legs, and all of your abs, making them an all-encompassing workout and a more efficient way to exercise.

So, what exactly is it about planks that make them a more effective movement than crunches? Well, one reason is that sit-ups and crunches can be hard on your back. Pushing your spine against the floor can cause lower back pain later on. Additionally, planks don’t just work your core: They work your entire body.Planks require your arms, your legs, and all of your abs, making them an all-encompassing workout and a more efficient way to exercise.

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