First of all, don't worry, find the reason, so young and so fat, it is hereditary, if there is no accident, it should be.

In this way, I'll tell you some ways, hoping to help you, but afraid you can't;

You get up at 6: 30 every morning and run and jog in the wild for 30 minutes. Don't be lazy. After you come back, do physical training, do sit-ups for 2 minutes, have a rest, and then do it again, 10 times. After sit-ups, do squats and stand. The method is the same. This kind of physical exercise should not be less than 30 minutes, including rest time. You should set your own goals. Finally, jump rope and slow down for 3 minutes. If you can last longer, you can jump for 5 minutes. Then take a rest and dance again. Jump at least 1000 times. Except for the rest time, it's basically after eight o'clock.

Then continue to repeat the above exercises at five o'clock in the afternoon. Three meals should be regular, neither more nor less. Just eat what you usually eat. If you are not afraid of suffering, try it.

Moreover, this is the healthiest way to lose weight, with no side effects.