There are active and passive structures surrounding a joint that help with stability. In a shoulder joint, muscles such as the rotator cuff will provide active stability, whereas ligaments provide passive stability. If you are focusing on prevention and have not had any previous injuries to your shoulder, neck or back, strengthening the muscles surrounding the joint through exercise may be beneficial. However, there are many muscles that make up your shoulder joint (17 muscles that attach to your shoulder blade!). A physical assessment by a Physiotherapist will be able to determine any muscular imbalances and prescribe specific and individualized exercises. It is also a good idea to engage in a proper warmup and cooldown prior to any strenous physical activity/demand of the shoulder.