You must keep running to lose weight, or you will get fat after running for a few months and then not exercising, but the degree varies from person to person. It is not absolutely necessary to lose 25 pounds if you persist. It depends on all aspects of your personal health. If you are stronger, it is possible to lose weight, but it is not impossible to lose that much. If you are fat or thin, you may lose that much, just don't want to lose weight suddenly. Generally, this situation is due to personal physical problems, so it is healthy to lose weight slowly, just like eating at least three meals a day, it is impossible to eat all three meals a day.