This is absolutely impossible. A hunger strike means that the body is not nourished. You should know that no matter what stage you lose weight, you can't go on a hunger strike, especially for junior high school students. Most junior high school students are at a long age. They should not only meet their physical foundation, but also eat more nutrition to help them grow. If you go on a hunger strike, it is common to grow taller. In severe cases, they may even be sent to the hospital because of weakness. Fasting can lead to insufficient energy supply to the body and the brain can't work. It is extremely harmful to learning. Moreover, even if a hunger strike can make people lose weight in a short time, their bodies will be adjusted. Long-term hunger strike, if you drink water, may eventually lead to obesity, and it is impossible for people not to eat all their lives.
If you want to lose weight, eating well is essential. If you don't have enough energy, where can you consume it? Exercise plus diet control is the unchangeable truth of losing weight.