What muscles does the Dumbbell Lying Triceps Extension work?

This exercise primarily targets the triceps brachii on the back of your upper arms. It’s designed to isolate the triceps with minimal involvement from other muscle groups, making it ideal for building arm strength and definition.

What equipment do I need for the Dumbbell Lying Triceps Extension?

You’ll need a flat bench and a pair of dumbbells to perform this exercise properly. If you don’t have access to a bench, you can do it lying on the floor, but the range of motion will be reduced.

Is the Dumbbell Lying Triceps Extension suitable for beginners?

Yes, beginners can perform this movement if they use light weights and focus on proper form. It’s important to maintain control and avoid lowering the dumbbells too quickly to reduce strain on the elbows.

What are common mistakes to avoid with the Dumbbell Lying Triceps Extension?

Common errors include flaring the elbows outward, moving the upper arms, or using excessive weight that compromises form. To avoid injury, keep your upper arms stationary, wrists neutral, and perform slow, controlled reps.

How many sets and reps should I do for the Dumbbell Lying Triceps Extension?

For strength and muscle growth, aim for 3–4 sets of 8–12 controlled repetitions. Beginners may start with 2 sets of 10–12 reps using a lighter load for better technique practice.

Are there variations of the Dumbbell Lying Triceps Extension?

Yes, you can perform this exercise with a single dumbbell held with both hands, or use an EZ bar for a slightly different grip and feel. Adjusting the bench to a slight incline can also change the angle and muscle activation.

What safety tips should I follow for the Dumbbell Lying Triceps Extension?

Always warm up your elbows and triceps before starting, and choose a weight you can control throughout the movement. Keep the dumbbells clear of your face when lowering them, and have a spotter if you’re lifting heavy.

Dumbbell Lying Triceps Extension

Target Muscles

Primary:

Triceps

Equipment Required

Bench

Dumbbell

Exercise Type

Weight & Reps

How To Do

Lie flat on a bench holding a dumbbell in each hand above your chest, arms fully extended and palms facing each other. Keeping your upper arms still, bend your elbows to lower the dumbbells toward your forehead, then extend your arms to return to the starting position. Maintain control throughout and avoid letting your elbows flare out.

Step-by-Step Instructions

Lie flat on a bench with your feet firmly planted on the ground for stability. Hold a dumbbell in each hand with a neutral grip (palms facing each other). Extend your arms straight up above your chest, keeping the dumbbells close together.
Slowly lower the dumbbells by bending your elbows, keeping your upper arms stationary and perpendicular to the bench. Lower the dumbbells until they are near your forehead or slightly behind your head.
Pause briefly at the bottom of the movement, ensuring control and avoiding any sudden jerks.
Push the dumbbells back to the starting position by extending your elbows, focusing on contracting your triceps. Keep the movement smooth and controlled.
Repeat for the desired number of repetitions, maintaining proper form throughout the exercise.

Explore more triceps exercises or bench exercises in our exercise library.

Alternative Exercises

Dumbbell Decline Triceps Extension

Triceps

Bench • Dumbbell

Dumbbell Incline Triceps Extension

Triceps

Bench • Dumbbell

Barbell Lying Triceps Extension (Skull Crusher)

Triceps

Bench • Barbell

EZ-Bar Lying Close-Grip Triceps Extension Behind Head

Triceps

Bench • EZ Bar

Frequently Asked Questions

What muscles does the Dumbbell Lying Triceps Extension work?: This exercise primarily targets the triceps brachii on the back of your upper arms. It’s designed to isolate the triceps with minimal involvement from other muscle groups, making it ideal for building arm strength and definition.
What equipment do I need for the Dumbbell Lying Triceps Extension?: You’ll need a flat bench and a pair of dumbbells to perform this exercise properly. If you don’t have access to a bench, you can do it lying on the floor, but the range of motion will be reduced.
Is the Dumbbell Lying Triceps Extension suitable for beginners?: Yes, beginners can perform this movement if they use light weights and focus on proper form. It’s important to maintain control and avoid lowering the dumbbells too quickly to reduce strain on the elbows.
What are common mistakes to avoid with the Dumbbell Lying Triceps Extension?: Common errors include flaring the elbows outward, moving the upper arms, or using excessive weight that compromises form. To avoid injury, keep your upper arms stationary, wrists neutral, and perform slow, controlled reps.
How many sets and reps should I do for the Dumbbell Lying Triceps Extension?: For strength and muscle growth, aim for 3–4 sets of 8–12 controlled repetitions. Beginners may start with 2 sets of 10–12 reps using a lighter load for better technique practice.
Are there variations of the Dumbbell Lying Triceps Extension?: Yes, you can perform this exercise with a single dumbbell held with both hands, or use an EZ bar for a slightly different grip and feel. Adjusting the bench to a slight incline can also change the angle and muscle activation.
What safety tips should I follow for the Dumbbell Lying Triceps Extension?: Always warm up your elbows and triceps before starting, and choose a weight you can control throughout the movement. Keep the dumbbells clear of your face when lowering them, and have a spotter if you’re lifting heavy.