Triceps
Forearms, Shoulders
Sit bench end, hold DB each hand neutral grip.
Hinge hips, torso near parallel floor.
Upper arms close to torso, parallel floor.
Elbows bent 90 deg, forearms down.
Keep upper arms still.
Extend forearms back, push DBs up.
Arms fully extended.
Squeeze triceps.
Lower slowly.
Repeat.