Be a "Beast" for a Better Core
/ROAR. This "beast" hold is one of my favorite exercises for building strength and stability in the core and shoulders.
Start on your hands and knees. Stack your wrists under your elbows and place your knees just slightly in from your hips (closer to your belly button). Raise both knees an inch or so off the ground and hold by engaging your abs and packing your shoulders. Think about creating length in your spine from your head all the way to your butt.
Similar to a plank this is a practice of finding a good position and holding for time. Start with 30-60s and see how you do.
And once you become a static beast master and want to make it a dynamic move, give this beast with reach move (video below) a try for a greater mobility and oblique challenge.