Choose a dumbbell and sit on the end of a flat bench or a 90 degree back bench with the dumbbell resting on your thighs.

Hold the dumbbell with a pronated grip (palm facing your feet) with your left hand andliftthe dumbbell above your head until your arm is fully extended.

You can brace your right arm by placing your right hand on your knee or across your stomach.

Bending at the elbow only, slowly lower the dumbbell down behind the right side of your head your head until it is about level with your right ear.

Pause and squeeze the tricep. Then raise the dumbbell back to the starting position.

Do not lock your elbow out and then repeat for desired reps.

Repeat the motion with your right arm.

Exercise Tips:

Keep the rep timing slow and control the weight throughout the set.

Focus on moving the weight with your triceps and only moving your forearms. Keep the rest of your body as still as possible.