As a side sleeper, I’ve always been worried about the effect the sleeping position has on my spine, hips, and shoulders. (I’m no stranger to waking up stiff, either.) To add to that, I’m in a constant ...

Common causes of pain on the left side of the body include infection and injury to muscles, nerves, or internal organs, such as the heart, spleen, left lung or kidney, pancreas, and more. It is best ...