Both Liu Genghong and A Xin need to jump. The reason for this is the following：

1, Liu Genghong belongs to a relatively simple jumping exercise, which is easy to get started and has low requirements for himself, but its disadvantage is slow fat loss.

2, A Xin aerobics can quickly reduce fat, but the disadvantage is that it is difficult to get started. If there is no foundation, it is easy to strain the ligament.