With the need to be ready under any circumstances from operational missions to physical training, understanding how the adrenal gland functions is important for any tactical athlete. The adrenal gland mediates performance and can have a negative effect on the body’s physiology when exhausted. It is vital to understand the interventions needed to obviate the negative effects and enhance the positive aspects of such physiological function. This session from the 2015 TSAC Annual Training sheds light on this important physiological system that impacts both physical health and functional performance.