Popsugar Health & Fitness Workouts Arm-Toning Workout Without Weights Tone Your Arms With This Electric 15-Minute Weight-Free Workout 18 July 2018 by Tamara Pridgett View On One Page Photo 4 of 4 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 Plank With Shoulder Tap Begin in a plank variation with your feet slightly wider than your hips for added stability. Keeping your torso stable, bring your right hand to your left shoulder, then return your right hand back to the mat. Bring your left hand to your right shoulder and return it to the mat. This counts as one rep. Complete 10 reps. Previous Next Start Slideshow Trainer TipsBody Weight15-Minute WorkoutsBodyweight ExercisesArm WorkoutsBeginner WorkoutsBodyweight WorkoutsArm ExercisesStrength TrainingWorkouts