Attach a single handle to a cable pulley and set it to the highest setting.
Grab the handle with an overhand (pronated) grip.
Keeping your elbow in by your side, use your tricep to push the handle straight down.
Then slowly bring the handle back up to the starting position. Bring your arm back up as far as you can while keeping your elbow in by your side. Don’t make the mistake of shortening the range of motion by not coming all the way back up to the starting position.
