Dumbbell Kickback

1. Hold a dumbbell in one hand and hinge forward at the hips until your torso is close to parallel with the floor.
2. Brace your free hand on a bench or your knee for support.
3. Pin your upper arm against your side, elbow bent to about 90 degrees.
4. Without moving your upper arm, extend your forearm back until your arm is fully straight.
5. Squeeze your triceps hard at full extension.
6. Slowly bend the elbow to return the dumbbell to the starting position.
7. Complete all reps on one side before switching arms.

Common Mistakes

• Swinging the upper arm: Letting the shoulder move to help lift the weight turns this into a shoulder exercise. Keep your upper arm locked against your torso the whole set.
• Using too much weight: A dumbbell that's too heavy forces you to cheat the range of motion. Drop the load until you can lock out fully with control.
• Stopping short of lockout: Not fully extending the elbow at the top skips the peak triceps contraction. Straighten the arm completely on every rep.
• Rounding the back while hinged: Letting your spine round while bent over strains the lower back. Keep a flat back and brace your core throughout.

Programming Tips

The dumbbell kickback does one thing no pushdown or extension can: it loads the triceps at full contraction, with the arm completely straight behind the body. That peak-squeeze bias makes it the natural partner to overhead extensions, which load the opposite end of the range. Program 2 to 3 sets of 12 to 15 reps per arm at the very end of a push or arm session, after the pressing and heavy extension work, as the finisher that burns out whatever the big lifts left behind.

The exercise collapses the instant the upper arm moves, so build the set around keeping it frozen: hinge to near parallel, pin the elbow above the level of your back, and move only the forearm. The dumbbell will be humble, 4 to 8 kg for most lifters, because at full extension the leverage is merciless. Squeeze for a full second at lockout, lower under control, and progress in 1 to 2 kg steps only while that top squeeze survives.

Common Questions

Are kickbacks actually worth doing?

As a main triceps builder, no; pushdowns and extensions move far more load. As a finisher, yes, because the fully shortened position they train is exactly where cables and skull crushers give the triceps a rest.

Why does such a light dumbbell feel so hard?

At the top of the rep the forearm is horizontal and the dumbbell's leverage is at its maximum, right where the triceps are at their weakest length. That mismatch is the feature: it guarantees the top of the rep is never free.

How flat should my torso be?

As close to parallel to the floor as you can hold comfortably. An upright torso turns the top of the rep into a rest position, because gravity stops pulling against the straightened arm.