Stress: when the body is stimulated by various internal and external environmental factors, it is a non-specific systemic reaction characterized by hyperfunction of locus coeruleus-sympathetic nerve-adrenal medulla system and hypothalamus-pituitary-adrenal cortex system, which is called stress or stress response.

An emotional state caused by dangerous or unexpected changes in external conditions is a possible psychological factor in decision-making psychological activities. Stress can be caused by physical, psychological, social and cultural factors.

Extended data:

Under pressure, people may have two manifestations: one is dumbfounded, confused and in chaos; One is to use quick wits, be clear-headed, act accurately and forcefully, and get out of trouble in time. Stress is a special response of human beings to adapt to the environment, which is mainly based on physiological changes and also has psychological components. Long-term emotional stress makes the body's excitement level too high, leading to excessive consumption of body energy, which leads to diseases of the whole body or a system or an organ, and even death.

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