The most effective type of exercise for weight loss is often high-intensity interval training (HIIT), which alternates short bursts of intense activity with periods of rest or lower-intensity exercise. This approach maximizes calorie burn during and after workouts, leading to greater fat loss compared to steady-state cardio. Additionally, incorporating strength training into a fitness routine enhances muscle mass, which can boost overall metabolism. The combination of HIIT and strength training provides a comprehensive approach, optimizing weight loss and improving overall fitness levels.