HIIT (High-Intensity Interval Training) is significant for metabolic health because it effectively improves cardiovascular fitness and metabolic rate. These short bursts of intense activity followed by rest periods can enhance the body’s ability to burn fat and increase insulin sensitivity, reducing the risk of metabolic disorders like obesity and type 2 diabetes. Additionally, HIIT has been shown to elevate post-exercise calorie burn, making it an efficient workout option for improving overall health and maintaining a healthy weight.