The resistance band plank for Son of the Beast is a great core strengthening exercise. The plank strengthens your spine, your rhomboids and trapezius, and your abdominal muscles, which naturally result in a strong posture as they grow in strength. This can also help prevent injury. Learn more about properly executing this exercise with the video above.
Regression
Reduce the intensity of this exercise by performing a low plank on your elbows or reducing your distance from the anchor.
Progression
Move farther away from the anchor to increase the amount of tension on the Beast ropes.