To do this tricep and arm toning exercise, just think of the way you take a back scratcher to your back, moving your arms up over your head and then up and down until you finally scratch that itch.
The motion for doing these seated dumbbell overhead presses is exactly the same, only you're doing them with 20-40 pound weights rather than a stick of wood. Check out this video to learn how to do this excellent arm-firming exercise.
The seated dumbbell overhead press is a great triceps exercise. Work very hard on linking up your "mind muscle" connection.
"Squeeze water out of a sponge" in the tricep area during the contraction; especially during the top of the positive or concentric phase of the movement.