Specifically, "double passive leg press hip press" means that two people sit face to face on the ground, with their legs straight and close together, and then use their arms and strength to help one of them bend forward, so that the thigh is parallel to the ground as far as possible, and the knee of the other leg is straight up, so that the body can be folded down as much as possible.
This training method is mainly to improve the flexibility and flexibility of leg muscles. But because everyone's physical condition and flexibility are different, this kind of training may cause some pain. Especially when the body is folded to the limit, you may feel muscle soreness and stretching pain.