Second, it's windy and rainy. That is to climb the stairs. Climb 50 floors of stairs at a time.
Third, jump. You must dance every day. The same daily increment. Start at 200. 1 to 500.
Fourth, play basketball, football or badminton. He must take part in these sports. Sports is a lifetime thing, so we must make him like a sports event, so that we can get twice the result with half the effort.
Last but not least. Your brother 12 years old weight 130 kg, the biggest responsibility lies with parents. There is no doubt that your whole family cherishes your brother. Give him whatever he wants, and let him eat whatever he wants, for fear that he won't eat less. This is completely wrong. You must limit his daily food intake. Don't think that you can lose weight by exercising. If you don't control your appetite, everything will be in vain! This matter needs you to communicate with your parents, especially your grandparents. Your brother is so heavy now, it is not as simple as whether he can eat or not. It is unrealistic not to reduce it now. Once we think of all-round development, we will try to reduce it. And if you don't try your best to make him lose weight now, he is old and has self-esteem, and this weight will bring him a lot of trouble. If it really doesn't work, send him to a weight loss center. Remember, obesity, big or small, is definitely not small. For the sake of your brother's future, your family must be cruel from now on! ! !
Wish you success! !