Sit on the preacher curl machine and adjust your position so your upper arms rest firmly on the pad. Grip the handles with a reverse (overhand/pronated) grip and start with your arms fully extended. Keeping your upper arms fixed against the pad, curl the handles upward by bending your elbows in a controlled motion. Squeeze your biceps and forearms at the top, then slowly lower the weight back down until your arms are fully extended again. Avoid using momentum and keep your elbows stable throughout the movement.
Log your lever reverse grip preacher curl sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.