Unexplained muscle pain in the arms and legs may be the result of benign issues. Or it may point to a more serious underlying condition, such as fibromyalgia, infection, or thyroid issues. Muscle pain ...

Some people experience muscle pain in cold weather. This may be due to the effects of cold temperatures. For example, being cold can make muscles tense. Cold weather may increase the risk of muscle ...

Consumer Reports has no financial relationship with any advertisers on this site. Like other parts of your body, your muscles change over the years. “As you age, your muscle fibers become less dense, ...