Which body part must remain stationary throughout the squat?

In a squat, the lifter's feet must remain stationary to maintain proper form and balance throughout the lift. This stability is crucial because the feet provide a solid base of support during the entire movement. If the feet shift or move, it can lead to improper mechanics, which could compromise the squat's effectiveness and safety. Keeping the feet firmly planted allows for optimal power transfer from the legs through the feet into the ground, ensuring that the lifter can perform the squat correctly and effectively.

In contrast, the hands can move as they grip the barbell, and the head may adjust slightly to maintain a neutral spine alignment or gaze forward. The knees will also naturally move during the squat as they bend and straighten, which is an integral part of the movement. Therefore, the feet's need to remain in place is a critical aspect of maintaining stability and proper technique in the squat.