Stress affects a person’s physical, mental, and emotional health. When stress continues for a long time, it can cause headaches, tiredness, sleep problems, high blood pressure, and a weak immune system. Mentally, stress reduces concentration, memory, and decision-making ability, and may lead to anxiety or depression. Emotionally, a stressed person may feel irritable, restless, or overwhelmed. Stress can also affect behaviour, causing changes in eating habits, social withdrawal, or poor work performance. Managing stress is important to maintain overall health and well-being.