Stress is the body's natural response to challenges or perceived threats. Stress is a normal and necessary part of life that can help us cope with challenges and changes. Not all stress is bad, but excessive or chronic stress can negatively impact our physical and mental health.

Stress can be defined as a state of mental or emotional strain or tension resulting from adverse or demanding circumstances. Various internal and external factors can trigger stress, such as work, relationships, financial problems, and health concerns and can also be caused by major life events, such as moving, starting a new job, or getting married.

The way that stress is experienced can depend on a person's characteristics, such as personality, coping skills, and overall health. People may also experience stress in different ways depending on the source of the stress.

For example, stress related to work may cause people to feel pressure to meet deadlines or to perform at a high level, while stress related to relationships may cause feelings of conflict or uncertainty. Stress can also affect people's behavior, causing them to become more withdrawn or reactive or to engage in unhealthy behaviors such as overeating or substance abuse.