Different forms of exercise impact body composition in various ways. Strength training is effective for building and preserving muscle mass, promoting a leaner appearance and improving metabolism. In contrast, aerobic activities like running or cycling are more effective for burning calories and reducing body fat. High-Intensity Interval Training (HIIT) combines elements of strength and cardio, maximizing fat loss while enhancing cardiovascular fitness. Ultimately, the best approach to altering body composition involves a combination of both strength training and aerobic exercise, tailored to an individual’s goals and preferences for optimal results.