Strength training can significantly affect hormone levels in the body, notably increasing testosterone and growth hormone, both of which contribute to muscle growth and strength. These hormones promote protein synthesis, aiding in muscle repair and recovery post-exercise. Furthermore, strength training can improve levels of insulin sensitivity and help regulate cortisol levels, a hormone related to stress. The hormonal adaptations from regular resistance training not only enhance physical performance but also contribute to better body composition and metabolic health, making it an essential component of a balanced fitness routine.