Planks improve core stability and strength and are part of our office’s rehabilitation programs. We recommend working towards 3-minute side and standard planks. Beyond this, there is likely no benefit. I am also including instructions on a reverse plank, which can help improve posture and further strengthen the core and fascial stability. Think of planks as an insurance policy against back injuries. While anyone can have back pain, a more functional and stronger, and effective core reduces your risk.