Experts say PLANKS are much more effective for your abs than crunches.
That’s because crunches only work SURFACE abdominal muscles. But planks target your entire CORE – surface abdominal muscles, transverse abdominal muscles, obliques, and lower back muscles. That helps flatten your belly and pulls in your waist like you’re wearing a corset. Plus, planks are safer than crunches. The discs in your spine aren’t repeatedly bent. And that’s what increases your risk of injury when you do crunches.