High-intensity workouts positively affect hormone levels, primarily through increased secretion of growth hormone and testosterone. These hormones are critical for muscle growth, fat loss, and overall metabolic function. Additionally, such workouts can lower levels of the stress hormone cortisol, which, when elevated, may impede recovery and lead to fat retention. Regular engagement in high-intensity training can thus optimize hormone balance, promoting a more effective physiological response to exercise and enhancing overall fitness outcomes.