Fatigue, or exhaustion, is a state of extreme tiredness that can affect both the body and mind. It often results from prolonged physical activity, lack of sleep, or emotional stress. When someone feels fatigued, they may struggle to concentrate, feel irritable, or have little energy to perform daily tasks. This condition can be temporary, like after a long day at work, or chronic, lasting for weeks or months. Factors such as poor diet, medical conditions, or even certain medications can contribute to fatigue. It's important to address these underlying issues to regain energy and improve overall well-being.