Physiological stress
Physiological stress can be defined as any external or internal condition that challenges the homeostasis of a cell or an organism. It can be divided into three different aspects: environmental stress, intrinsic developmental stress, and aging. Throughout life all living organisms are challenged by changes in the environment. Fluctuations in oxygen levels, temperature, and redox state, for example, trigger molecular events that enable an organism to adapt, survive, and reproduce. (K.Kagias, Nehammer.C, R., Pocock, October 26, 2012)
The stress response begins in the brain. When someone confronts an oncoming car or other danger, the eyes or ears (or both) send the information to the amygdala, an area of the brain that contributes to emotional processing. The amygdala interprets the images and sounds. When it perceives danger, it instantly sends a distress signal to the hypothalamus. (Howard E., LeVine, april 3, 2024)
A study found that one in every four participants experienced stress-related fatigue, which is more prevalent in women than men. The researchers also discovered that burnout due to stress-related fatigue is associated with factors like work demands, "little vacations or leisure time," and working overtime. (Blain., T., june 23,2022)
K.Kagias, Nehammer.C, R., Pocock, (October 26, 2012). National Center for Biotechnology information. PubMed. Neuronal responses to physiological stress. Retrieved from https://surl.li/yiztha
Howard E., LeVine, (April 3, 2024). Harvard Health Publishing. Harvard Medical School. Understanding the stress response.Chronic activation of this survival mechanism impairs health. Retrieved from https://surl.li/jkggep
Blain., T. (June 23, 2022). Verywell mind. Physiological Symptoms of stress. Retrieved from https://surl.li/zbvshi