Think about it.
What’s a push-up? A moving plank. What’s a pull-up? A moving
plank. What are we doing with our torsos during squats and deadlifts?
Maintaining the flat back posture characteristic of, you guessed it, a plank!
Yet if there’s one
exercise that’s notoriously butchered, it’s also the plank.
People often attempt to hold it for way too long (e.g.
several minutes on end). And when they do, it’s usually ugly. They lose proper
position (a straight line from head to heel) and, therefore, the desired
training effect. They also kill all of the puppies in the process.
Over the last few years, likely in response to the puppy-killing
plank epidemic, the RKC plank has emerged as a potential solution.