The Results of Daily Planking: A Comparison of Two-Minute Copenhagen and Seven-Minute Chinese Planks.
The Copenhagen Plank is an advanced version of the side plank that targets the core, inner and outer thighs, and shoulders. Doing a two-minute Copenhagen plank every day for a week can help strengthen the obliques, inner and outer thighs, and shoulders. While it may not lead to visible abs in a week, it is a great addition to any core workout routine.