Chronic stress negatively affects physical health by triggering a sustained release of cortisol, a stress hormone. Elevated cortisol levels can lead to various health problems, including increased blood pressure, weight gain, and diminished immune function. Additionally, chronic stress can contribute to mental health issues like anxiety and depression, further affecting physical well-being. It can also exacerbate pre-existing conditions, such as heart disease and diabetes, and disrupt sleep patterns. Addressing chronic stress through relaxation techniques and lifestyle changes is essential for maintaining overall health.