Endocrine Fitness, or the fitness level of our body‘s hormone system, is incredibly important to athletes. The endocrine system is how our bodies recover from all of the stress we place on it, and is most active when we are sleeping. Poor endocrine fitness will cause an athlete to get sick easily, suffer from overuse injuries, and have a hard time paying attention. Along with good lifestyle choices, tracking and reaching your maximum potential during workouts and trainings will help increase your endocrine fitness. The endocrine system consists of the hypothalamus, pineal gland, pituitary gland, thyroid gland, thymus gland, adrenal glands, pancreas, testis, ovary glands, and liver.