Exhaustion, or fatigue, is a state of extreme tiredness that can result from physical or mental exertion. It can be caused by various factors, including lack of sleep, stress, illness, or overexertion. Symptoms may include weakness, lack of energy, and difficulty concentrating, impacting daily activities and overall well-being. Chronic fatigue can lead to more serious health issues if not addressed. It is important to identify the underlying causes, which may involve lifestyle changes, medical evaluation, or rest. Proper management can help restore energy levels and improve quality of life.