What is the effect of adrenaline during stressful situations?

During stressful situations, adrenaline, also known as epinephrine, plays a critical role in preparing the body for a "fight or flight" response. This hormone is released by the adrenal glands and leads to several physiological changes that enhance the body's ability to cope with acute stress. One of the key effects of adrenaline is the increase in energy and strength. This is achieved through various means, including raising heart rate, dilating airways, increasing blood flow to muscles, and mobilizing energy stores, which collectively help an individual respond effectively to a stressor.

The increase in energy and strength allows for improved physical performance, whether it's running away from a threat or defending oneself. These changes are crucial in survival scenarios, ensuring that the body is primed for immediate action. Understanding the role of adrenaline helps clarify why it is often associated with feelings of heightened alertness and capability during stressful experiences.