Holding the standard plank for ten seconds or longer is useless according to Dr. Stuart McGill. Unfortunately, many people still try to do planks for time.
A better way to progress this core exercise? Make it harder. The cable plank press will help you take your core strength to the next level, and you'll even build some extra upper-body muscle.
We all know building a muscular body takes time, but if you want to speed things up and kickstart some serious hypertrophy, you must make intelligent use of two core muscle-building concepts: absolute strength and absolute volume.