Instructions
Hold onto a kettlebell in one hand and flip it upside down. Bring your upper arm in line with your shoulder and the base of the kettlebell up to face the ceiling. Choose a weight that is heavy enough to create resistance when holding it, yet light enough that you can maintain holding it upside down. Bracing your core walk with the weight in your hand for the required distance. Repeat on the other side.
Tips
Keep your elbow out to the side, not allowing your elbow to turn in. This will work your shoulder stability.