Standing arm circles exercise is a simple but effective workout for your upper arms. Arm circle exercise is a great warm up exercise for daily workouts. It not only strengthens the arms and upper back but also targets the shoulders and chest. It is about a five minutes workout that tones your shoulders, biceps and forearms with small circular moves. Additional weights increase the intensity and benefits of arm circles exercise. You can perform the moves while seated but standing position is better to perform the circular motions accurately. Standing arm circles warm up your body temperature and also increase the blood flow and prepares you for more concentrated workouts.