Try these 3 resistance band exercises to help strengthen your arm. Front raises: Hold your hand with your palm facing inward and grab the band. Then, lift your arm straight up in front of you, and lower it down to your thigh. Repeat with the other arm. Side raises: Hold the band in your hand with your arm straight in front of you, then stretch out to the side. For instance, if you're holding the band in your left hand, you would pull to the left, and vice versa. Do that for both sides. Sword draws: Put the band under your right foot and grab it with your left hand near your right hip pocket. Then, bring your arm up and to the left of your body, as if you were taking a sword out of its holster and holding it up. Then, repeat that on the other side.