Exhaustion, or fatigue, is a state of extreme physical or mental tiredness that can result from prolonged activity, stress, or lack of sleep. It can affect a person's ability to function effectively, leading to decreased performance in daily tasks and activities. Common causes include overexertion, illness, and emotional stress. Fatigue can manifest in various ways, such as lack of energy, difficulty concentrating, and irritability. It is important to address the underlying causes of fatigue, which may involve lifestyle changes, improved sleep hygiene, or medical intervention. Recognizing the signs of fatigue is crucial for maintaining overall well-being.