If you’ve ever done a plank, then you know the intense, shaky feeling you get in your stomach, arms, shoulders, back, butt, and quads. Basically, it works out your entire body in one excruciatingly long move. (How is it possible for the seconds to go by so slowly in this position?) All the pro-plankers out there, you do you! For everyone else, there are other ways to get the strong abs you desire – without hurting your wrists or straining your neck. This series of no-plank ab workouts on YouTube guides you through strengthening your core muscles with crunches, oblique work, leg lifts, Russian twists, and more. See a few of our favorites ahead!