This is a chain squat! An advanced training method! Play a role in changing the load in the process of squat! It is conceivable! If the weight of the barbell is 100KG, each side is hung with 20KG chain (the chain and the barbell can be connected by rope, and a small part of the lower part of the chain touches the ground when carrying the barbell, and all the chains touch the ground when squatting to the bottom). When you lift the barbell, the weight is 140KG, when you squat down to the bottom, the weight becomes 100KG, but when you stand up. This is different from doing squats with barbells alone. The load of squat and squat with barbell alone has not changed, both of which are 100KG! Squats with chains can improve your absolute strength and explosive power, and at the same time increase your body's control and stability! It is recommended to join the chain squat after a certain squat foundation, and you will find that the strength will be significantly improved!