Popsugar Fitness Workouts 15-Minute Arm Workout I'm a Trainer, and This Is the Arm Workout I Do For Lean, Strong Arms February 21, 2019 by Tamara Pridgett View On One Page Photo 3 of 6 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 3 Plank Walks 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 completes one repetition. Do a total of 10 plank walks. Previous Next Start Slideshow Fitness TipsWorkoutsStrength Training30-Days-to-StrongBodyweight ExercisesTrainer TipsBeginner WorkoutsArm Workouts15-Minute WorkoutsArm Exercises