This is because the weight of the big tires used in the gym is usually set according to the actual needs of the bodybuilders. Lighter big tires usually weigh between 200 and 300 kg, while heavier big tires may weigh more than 500 kg.

Big fetus can be used for all kinds of aerobic and strength training, such as pushing, dragging and turning, which can exercise the whole body muscles and improve cardiopulmonary function and endurance.