External Shoulder Rotation
Start by lying on your right side with your right arm folded under your head. Your upper left arm should be parallel to your torso, bent at the elbow so that your forearm is lying across your stomach with your hand on the floor. By rotating your left shoulder, raise your forearm so that it is perpendicular to the side of your body. Switch to your other side and repeat. This exercise can also be performed with a dumbbell.
Internal Shoulder Rotation
Lay on your right side, like in the external shoulder rotation, but keep your right hand free this time. Keep your right arm next to your body and bend at the elbow. Rotate your shoulder to move your forearm. It will start flat on the floor, and then you will rotate it into your body so that your forearm is flat across your stomach. Repeat this motion 10-15 times and use a dumbbell if you prefer.
Lateral Deltoid Raise
Start with your arms to the side of your body, palms facing the thighs. Tighten the abdominals, bend the knees slightly, and position the feet about shoulder-width apart. Raise your arms straight out to your side until they are shoulder height. Hold that position briefly, and slowly return your arms to your sides.
Front Deltoid Raise
Start with your arms in front of your body, palms facing the thighs. Tighten the abdominals, bend the knees slightly, and position the feet about shoulder-width apart. Raise your arms straight out in front of you until they are shoulder height. Hold that position briefly, and slowly lower your arms.