Exercise is not just for weight loss, it has powerful benefits for your brain and body. Weight lose ideally means losing the fat while gaining or maintaining the muscles. Which means, it is possible to lose fats without losing much weight. How exercise drives appetite and consumption is subjective from individual to individual. Some people might even start consuming more after exercising which prevents weight loss. People who have lost weight through exercising need to stick to their exercising schedule for a long time otherwise they might gain double.