-Free weight equipment: such as dumbbells, barbells, etc. Because its use mode and weight can be adjusted freely, it is more likely to be injured due to improper use or excessive weight.

-Impact equipment: such as strength training machines and leg lifts, which may cause muscle strain or joint injury under heavy objects or strong impact.

-Down-tilt bench press: Down-tilt bench press is the movement with the heart up and the head down, which may cause pressure on the heart.

-High-position pull-down behind the neck: This back exercise may damage the neck.

-The barbell behind the neck pushes the shoulder: This action is similar to the high pull-down behind the neck, which may damage the neck.

-Back pedaling machine: When using the back pedaling machine to practice legs, because the back pedaling machine is easy to exert force, if the control is unstable, if the knee is locked when straightening the legs, it is easy to get injured.

In order to avoid accidental injury during the use of the instrument, you can take the following measures:

-Know your physical condition and endurance, do weight training, and don't overload.

-Set appropriate safety protection devices, such as barbell protection bars, to reduce risks.

-It's better to have someone to assist and supervise the heavy training.

-Do not blindly pursue weight, increase the load step by step, and carefully choose the action and weight according to your personal situation.