Left side, right side, on your belly, on your back? How did you sleep last night? Most people tend to go to sleep in the same ...

Tingling in your left arm can have several causes, some more serious than others. Here are seven possible explanations and ...

Pain is always disconcerting regardless of where it occurs, but it can be especially worrisome if it emanates from the left side of the body, where vital organs like the heart are located. The good ...

Frequent exercise doesn't just strengthen the heart—it also changes the nerves that control it, according to new research which could guide more targeted and effective care for common heart problems.