👉 Metasthenic is a term used in psychology to describe someone who experiences feelings of fatigue, lack of motivation, and difficulty concentrating. It's often associated with individuals experiencing physical symptoms such as muscle pain or fatigue due to an illness. This condition can be caused by a range of factors including stress, illness, and certain medications. The term "metasthenic" comes from the Greek word "métis," which means "broad" or "wide." It suggests that someone experiencing