After a long day of work or play, you may find that your muscles are stiff and achy. Shoulder pain can prevent you from getting a good night's rest and make you feel stiff first thing in the morning. Read on to learn about the most common causes of night-time shoulder discomfort and some strategies for alleviating the pain so you can get some better sleep. Why did shoulder discomfort get so much worse at night? Your shoulder could be hurting you in the evening for a number of different reasons. Night-time shoulder pain is typically the result of an existing injury or improper sleeping posture. When you sleep on your side, your body weight is distributed unevenly across your shoulder, putting stress on the joint. Back or stomach sleeping is preferable since it helps disperse body weight and prevents morning stiffness. The rotator cuff is a set of muscles in the shoulder that can be strained or torn when you fall on an outstretched arm or lift something too heavy. A tea