At the beginning of the hard pull action, the barbell should be pulled off the ground, requiring a fixed height from the ground, with a standard height of 22.5CM, that is, a standard Olympic number piece with a diameter of 45CM should be put.

The diameter of a standard barbell piece is 45cm, that is, the radius from the center of the barbell to the ground is 22.5cm, and the diameter of an encapsulated barbell piece in a general gym is 25kg, which is 45cm. Visually, the maximum diameter of the barbell piece you use is 10kg, with a diameter of about 30cm, and the two floor mats will not exceed 35cm.