Sit on the machine with your back firmly against the pad and feet flat on the floor. Adjust the seat so the handle is aligned with your mid-chest. Grasp the handle with one hand, starting with your elbow bent about 90 degrees. Press the handle forward in a controlled motion until your arm is almost fully extended without locking the elbow. Pause briefly at the top while squeezing your chest. Slowly return the handle back to the starting position under control. Complete all reps on one side before switching arms.
Log your lever one arm chest press plate loaded sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.