Effective physical activities for weight loss include a combination of aerobic exercises and strength training. Activities such as running, cycling, and swimming increase calorie expenditure, supporting fat loss. Incorporating resistance training builds muscle mass, which in turn elevates the resting metabolic rate, facilitating continuous calorie burn. High-Intensity Interval Training (HIIT) can also be particularly effective due to its ability to burn calories quickly. A balanced approach, along with a healthy diet, maximizes results for effective weight management.