Stand facing a cable machine with a high pulley and rope attachment. Grasp the rope with a neutral grip (palms facing each other) and elbows tucked close to your sides. Press the rope downward by extending your elbows until your arms are straight and the rope ends near your thighs, spreading the rope ends outward at the bottom for a deeper contraction. Slowly return to the start with control to keep tension on the triceps throughout the movement.
Log your cable pushdown (with rope attachment) sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.