What is a common physiological response to stress?

The physiological response to stress commonly includes an increased heart rate. This response is part of the body’s fight-or-flight mechanism, which activates when faced with a perceived threat or stressor. When stress occurs, the body releases stress hormones such as adrenaline and cortisol. These hormones prepare the body to either confront or flee from the danger. As a result, several bodily functions ramp up, including heart rate, to enhance blood flow to muscles and vital organs, thereby preparing the individual for quick action.

In contrast, other responses, like decreased heart rate, would not align with the body's typical reaction to stress. Increased flexibility and improved digestion are also not direct responses to stress; in fact, stress often leads to muscle tension and can hinder digestive processes. Hence, increased heart rate is consistent with the body’s physiological preparation for dealing with stress.