Triceps Extension (Bent-Over, One-Arm) - Dumbbell

Sit bench end, hold DB one hand.

Hinge hips, torso near parallel floor.

Upper arm close to torso, parallel floor.

Elbow bent 90 deg, forearm down.

Keep upper arm still.

Extend forearm back, push DB up.

Squeeze tricep.

Lower slowly.

Repeat reps, switch arms.