I feel exhausted. Being exhausted means that I'm physically and mentally tired due to a lack of energy or enthusiasm. It's a feeling of being completely worn out, both physically and mentally, after doing too much work or activity. It can also be caused by extreme stress, overwork, or lack of sleep. When I'm exhausted, I often have difficulty concentrating on tasks and my performance suffers as a result. It's important to recognize when one is feeling exhausted and take steps to manage it in order to maintain good physical and mental health.