Stress is the body's response to any physical or emotional changes in life. There are two main types of stress: acute stress which is usually short-term and caused by things like work pressure or minor accidents, and chronic stress which is long-term stress from things like poverty or chronic illness. Positive stress, or eustress, can motivate and improve performance in short bursts while negative stress, or distress, decreases performance and can cause mental and physical problems. Common signs of stress include negative self-talk, unrealistic expectations, and physical/emotional/behavioral/mental responses. Stress management techniques include relaxation methods like deep breathing, meditation, exercise, and learning to say no.