15 Emotions That Can Physically Affect Your Health

5. Fear

Fear instantly triggers the body’s fight or flight response, releasing adrenaline and causing your heart rate to spike. This surge can result in sweating, tremors, and a churning stomach or other gastrointestinal issues. These physical changes are the body’s way of preparing to face or escape danger, but frequent or intense fear can take a toll over time. The Cleveland Clinic explains how fear affects multiple bodily systems.