Stress, Cortisol Can Complicate Firefighting

The cortisol in our bodies is typically highest in the morning to help get us going. The level of cortisol lowers throughout the day in sync with our circadian rhythm. The level is lowest–half of the morning level–at night. But if we’re constantly stressed by the firehouse alarms or during runs, what are the effects of the continually higher levels of cortisol on our minds and bodies?