5 Not-So-Obvious Reasons You Should Be Planking Every Day Holding a plank is one of the most effective things you can do for your body. It’s simple, requires no equipment, and works far more than just your abs. At Studio Physique, we take planks to the next level by performing them on the Megaformer — adding resistance, instability, and precision that deepen the benefits even more. We all know planks tighten and tone the core. But here are five less obvious reasons fitness professionals swear by planking every day. Baby Got Back And by “back,”