Set a cable to a high pulley and attach a bar or rope. Kneel or sit on the floor facing the machine with your back straight and core engaged. Grip the handle and keep your elbows close to your sides. Push the handle downward by extending your elbows until your arms are fully straight, squeezing your triceps at the bottom. Slowly return to the starting position with control while maintaining tension throughout the movement.
Log your cable triceps pushdown on floor sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.