Typically, a person is stronger at certain point of a lift than they are at others (e.g. half squat vs full squat). To overcome the differentiation in resistance, chains are used to accommodate changes in strength at different phases of the movement. Ultimately, your muscles will have to work harder because of the chains.

How to Setup Chains for Strength Training (PDF)

Here is what you can expect to feel while squatting with chains:

• Awkwardness due to the change in directional forces
• A progressive weight increase as each chain link is elevated off the floor

The following are instructions for performing squats with chains:

First, secure the chains in place. Disengage the bar from the rack and position your feet shoulder width apart or wider. Your toes should be pointed slightly outward. Squat down until your thighs are parallel to the floor. Be sure to keep a straight back posture as you squat. Finally, ascend back up to the starting position. Be sure to exhale as you stand up. Chain squats should be done slowly and with control. Do not bounce out of the squat position. Repeat the exercise as needed.