High-intensity training, or HIIT, can significantly boost metabolic health by increasing the body's metabolic rate. Short bursts of intense exercise elevate heart rates and demand more oxygen, leading to greater calorie burn during and after workouts, known as the afterburn effect. HIIT also enhances insulin sensitivity, which helps regulate blood sugar levels. Furthermore, it can improve cardiovascular health and reduce fat mass, promoting better overall health markers. This training style is efficient, making it a practical choice for those looking to improve their metabolic profile in less time.