The Single Arm Tricep Pressdown with Supinated Grip is a cable exercise that targets the triceps while placing extra emphasis on the long head. Stand facing a cable machine with a single handle attachment set at the top. Grip the handle underhand (palm facing up) and keep your elbow tucked at your side. Press the handle downward until your arm is fully extended, then slowly return to the starting position under control. This variation allows for a stronger mind-muscle connection, helping improve tricep definition, strength, and stability.