Roman chair is a kind of fitness equipment specially used for abdominal training, which has the function of fixing the waist and keeping the trainer's body in a straight line. The bed is mainly used for resting and sleeping, and cannot provide the necessary support and stability, so it is not suitable for abdominal training actions such as standing in a Roman chair. During abdominal training, it is recommended to use special fitness equipment to ensure the correctness of movements and the stability of the body.