Sit on the leg curl machine with your back against the pad and place one leg under the padded lever. Keep your torso stable and grip the handles for support. Bend your knee to curl the lever downward toward your body, squeezing the hamstrings at the bottom, then slowly return to the starting position with control. Complete all repetitions on one leg before switching sides.
Log your lever seated one leg curl sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.