I am 18 years old, with a height of 175 and a weight of 140 kg. My mother always says that I am too fat, a standard otaku, and especially I don't like sports.
Your weight is out of proportion to your height, or you are not fat. If you must lose weight, you can control your diet through scientific diet time and methods to achieve the goal of losing weight. Eat well in the morning, at noon and at night. Please don't eat after 9 pm. You should be able to slim down slowly.