[header] How to perform the plank exercise [title] Begin on all fours. [step] If you are new to yoga or not especially flexible, prepare yourself to perform plank pose by starting on all fours. Make sure that you will be comfortable by using a yoga mat. 
You may also place a folded up blanket under your knees if you need some extra padding for your knees. [substeps] Make sure your hands are directly beneath your shoulders and your knees directly beneath your hips.