Stress that has a positive impact or is known as eustress is a type of positive stress that occurs when someone experiences challenges or pressure at an optimal level. According to the American Psychological Association (APA), eustress occurs when someone faces demanding situations but can still enjoy them. In other words, it is a type of stress that arises from challenging activities or tasks but at the same time provides satisfaction or pleasure.

"Low-level stress can stimulate the production of brain chemicals called neurotrophins," said Richard Shelton MD, deputy head of research at the Department of Psychiatry, University of Alabama. This substance helps strengthen the connections between neurons in the brain. If low-level stress is managed well, it can increase productivity and concentration, as well as have a positive impact on brain strength and performance."

Dr. Shelton explains that when the body faces stress, defense mechanisms will be activated to protect against potential injury or infection. One way is by increasing the production of interleukins, chemicals that regulate the immune system. This provides an additional boost to the immune system to provide temporary protection against threats.

"Stress can drive responsive and productive behavior, especially when facing time pressure," said Dr. Shelton. In other words, in certain situations, stress can serve as a motivator that pushes someone to successfully complete their tasks or responsibilities."