Position yourself on the assisted sit-up machine with feet secured and hands lightly supporting your head or crossed on your chest. Engage your core and exhale as you curl your torso up toward your knees in a controlled motion. Slowly lower back down, maintaining tension in the abs throughout the movement to build strength and endurance without straining your neck or lower back.
Log your assisted sit up sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.