Keep your torso flat on the bench as you secure your legs under the lever.
Curl your legs up as far as possible without lifting the upper legs from the pad, ensuring that you exhale during this movement.
Once you hit the fully contracted position, hold it for a second as you squeeze your hamstrings.
Slowly bring your legs back to the initial position as you breathe in, ensuring a controlled movement, and repeat the process for the desired number of repetitions.