Stand on the sled hack squat platform with your shoulders supported by the pads and one foot placed firmly on the platform while the other leg is lifted off or held clear. Unlock the sled and slowly lower your body by bending the working leg’s knee and hip, keeping your chest upright and core braced. Descend under control until your thigh reaches at least parallel while maintaining knee alignment over your foot. Push through the heel of the working leg to return to the starting position without locking out the knee. Complete all reps on one side before switching legs, maintaining balance and controlled movement throughout.
Log your sled one leg hack squat sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.