What muscles does the Dumbbell Lying Triceps Extension work?

This exercise primarily targets the triceps, which are responsible for straightening your arms. While the triceps do most of the work, your forearms also assist in stabilizing the dumbbells during the movement.

Do I need a bench for the Dumbbell Lying Triceps Extension or can I do it on the floor?

A flat bench is recommended because it allows a full range of motion for your elbows and keeps your shoulders in a comfortable position. However, you can perform the exercise lying flat on the floor, though the range of movement will be slightly reduced.

Is the Dumbbell Lying Triceps Extension suitable for beginners?

Yes, beginners can safely perform this exercise by starting with light dumbbells to focus on proper form. It’s important to keep your elbows stable and avoid swinging the weights to prevent strain on your joints.

What are common mistakes when doing the Dumbbell Lying Triceps Extension?

A common mistake is moving the upper arms instead of keeping them locked in place, which reduces triceps activation. Another frequent error is lowering the dumbbells too quickly, increasing the risk of injury always control the motion throughout.

How many sets and reps should I do for triceps growth?

For muscle building, aim for 3–4 sets of 8–12 reps using a weight that challenges you while maintaining proper form. Beginners may start with 2–3 sets of 10–12 reps to build endurance and technique before increasing the load.

What safety tips should I follow when performing this exercise?

Keep a firm grip on the dumbbells and avoid locking your elbows completely when extending to protect your joints. Always perform the movement with controlled speed and have a spotter if you’re lifting heavy for added safety.

Are there variations of the Dumbbell Lying Triceps Extension I can try?

Yes, you can perform it with a single dumbbell held with both hands or use an EZ bar for a different grip angle. Performing the exercise on an incline bench or with a slight decline can also change the stimulus on the triceps.

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 with 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. Keep your elbows pointed forward and move in a controlled manner throughout the exercise.

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 aligned with your shoulders.
Slowly bend your elbows to lower the dumbbells towards your forehead, keeping your upper arms stationary and elbows pointing forward.
Stop when the dumbbells are just above your forehead or slightly behind your head, ensuring a full stretch in the triceps.
Push the dumbbells back to the starting position by straightening your elbows, focusing on contracting your triceps.
Repeat for the desired number of repetitions, maintaining control and proper form throughout the movement.

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

Alternative Exercises

Dumbbell Lying Extension (Across Face)

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, which are responsible for straightening your arms. While the triceps do most of the work, your forearms also assist in stabilizing the dumbbells during the movement.
Do I need a bench for the Dumbbell Lying Triceps Extension or can I do it on the floor?: A flat bench is recommended because it allows a full range of motion for your elbows and keeps your shoulders in a comfortable position. However, you can perform the exercise lying flat on the floor, though the range of movement will be slightly reduced.
Is the Dumbbell Lying Triceps Extension suitable for beginners?: Yes, beginners can safely perform this exercise by starting with light dumbbells to focus on proper form. It’s important to keep your elbows stable and avoid swinging the weights to prevent strain on your joints.
What are common mistakes when doing the Dumbbell Lying Triceps Extension?: A common mistake is moving the upper arms instead of keeping them locked in place, which reduces triceps activation. Another frequent error is lowering the dumbbells too quickly, increasing the risk of injury always control the motion throughout.
How many sets and reps should I do for triceps growth?: For muscle building, aim for 3–4 sets of 8–12 reps using a weight that challenges you while maintaining proper form. Beginners may start with 2–3 sets of 10–12 reps to build endurance and technique before increasing the load.
What safety tips should I follow when performing this exercise?: Keep a firm grip on the dumbbells and avoid locking your elbows completely when extending to protect your joints. Always perform the movement with controlled speed and have a spotter if you’re lifting heavy for added safety.
Are there variations of the Dumbbell Lying Triceps Extension I can try?: Yes, you can perform it with a single dumbbell held with both hands or use an EZ bar for a different grip angle. Performing the exercise on an incline bench or with a slight decline can also change the stimulus on the triceps.