Popsugar Fitness Workouts Best Bodyweight Exercises For Arms The Moves You Need For Strong, Defined Arms — No Weights Needed! June 25, 2018 by Jenny Sugar View On One Page Photo 20 of 29 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 20 Up-Down Plank Begin in a full plank. Lower your right elbow to the mat and then your left, coming into an elbow plank. Put your right hand on the mat, and straighten your right elbow. Do the same on the left to return to a full plank. This counts as one rep. Previous Next Start Slideshow WorkoutsBodyweight ExercisesArm Exercises