Planks are a great exercise to strengthen the core and help reduce lower back pain. It should be in everyone’s program, even if you have to start on your knees, just make sure to follow proper form as explained in the video. Seek a professional to assist if you don’t know where to start.
In this video, I am doing a slightly harder variation where I am going from plank to pushup. This is an advanced technique but is a great place to work up to.