When people think about building impressive upper arms, bicep training usually gets most of the attention. However, the muscle that contributes the greatest amount of size to your upper arm is actually the triceps. If your goal is to develop fuller arms, improve pressing strength and create a more balanced physique, prioritising tricep development is essential.
Among the three heads of the triceps, the long head deserves special attention. It is the largest portion of the muscle and plays an important role in both elbow extension and shoulder movement. Because of its unique attachment point, the long head responds particularly well to exercises that combine a deep stretch with a strong contraction.
In this guide, you'll learn how the long head functions, why it matters for muscle growth, and which exercises can help you target it more effectively in your training routine.
The Role of the Long Head in Tricep Development
The triceps brachii is located on the back of the upper arm and consists of three separate sections:
- Long head
- Lateral head
- Medial head
Although all three heads work together during pressing and extension movements, they are not identical in structure or function.
The long head is the largest of the three and is the only portion that crosses the shoulder joint. Rather than attaching solely to the upper arm bone, it originates from the shoulder blade before running down the back of the arm and joining the common triceps tendon near the elbow.
This unique anatomy gives the long head several responsibilities. In addition to extending the elbow, it assists with shoulder extension and contributes to shoulder stability during upper-body movements.
For lifters focused on aesthetics, the long head is especially important because it contributes significantly to overall arm size. Developing this area can create a fuller appearance from both the side and rear view, helping the upper arm look thicker and more complete.
How to Train the Long Head More Effectively
A common misconception is that overhead exercises are the only way to target the long head of the triceps.
While overhead movements place the muscle under a deep stretch—which can be highly beneficial for growth—they are only part of the equation. To maximise long-head development, it is equally important to include exercises that allow the muscle to fully contract.
The most effective training programmes combine:
- Overhead movements that lengthen the muscle
- Pressing and extension exercises that create peak contraction
- Compound lifts that allow heavier loading
By training the long head through multiple angles and ranges of motion, you can stimulate more muscle fibres and create a stronger overall growth response.
Recommended Rep Ranges
Different exercises respond well to different loading strategies.
| Training Goal | Repetition Range |
|---|---|
| Strength & Heavy Loading | 8–12 reps |
| Hypertrophy | 10–12 reps |
| Isolation & Pump Work | 12–15 reps |
Rather than chasing heavier weights on every set, focus on controlled movement quality and maintaining tension throughout each repetition.
1. Overhead Dumbbell Tricep Extension
The overhead dumbbell extension is one of the most reliable exercises for emphasising the long head. Raising the arms overhead places the muscle in a stretched position, allowing it to work through a large range of motion.
How to Perform It
- Hold a dumbbell behind your head with both hands, or use one dumbbell in each hand.
- Keep your elbows pointing forwards rather than flaring out to the sides.
- Extend your arms until they are nearly straight overhead.
- Slowly lower the weight back behind your head under control.
- Repeat for the desired number of repetitions.
Training Tip
Single-arm variations can help improve muscle awareness and address side-to-side strength differences. If comfort is an issue, a weight plate can also be used instead of dumbbells.
2. Overhead Cable Tricep Extension
Unlike free weights, cables provide continuous resistance throughout the movement. This helps keep tension on the long head from start to finish.
How to Perform It
- Attach a rope handle to a high pulley station.
- Stand facing away from the machine and take a small step forwards.
- Hold the rope behind your head with elbows bent.
- Extend your arms until fully straight.
- Slowly return to the starting position while maintaining control.
Why It Works
The cable keeps resistance consistent throughout the movement, making it easier to maintain muscular tension and achieve a strong contraction at the top.
3. Skull Crushers
Skull crushers are a classic tricep-building exercise that allow the long head to work through a substantial range of motion. Lowering the weight slightly behind the head rather than directly towards the forehead can further increase the stretch placed on the muscle.
How to Perform It
- Lie flat on a bench holding an EZ curl bar above your chest with your arms extended.
- Keep your upper arms relatively stationary throughout the movement.
- Bend your elbows and lower the bar behind your head in a controlled manner.
- Pause briefly at the bottom position.
- Extend your elbows to return the bar to the starting position.
Training Tip
Avoid allowing the elbows to flare excessively. Keeping them tucked helps maintain tension on the triceps and reduces unnecessary strain on the shoulders.
4. Dumbbell Tricep Kickbacks
Although often overlooked, kickbacks can create an exceptionally strong contraction in the long head when performed correctly. They are particularly effective as a finishing exercise at the end of a workout.
How to Perform It
- Hold a light dumbbell in each hand and hinge forwards at the hips.
- Keep your back flat and your upper arms close to your torso.
- Bend your elbows to approximately 90 degrees.
- Extend your arms backwards until fully straight.
- Squeeze the triceps at the top before slowly returning to the starting position.
Why It Works
The position of the upper arm encourages full contraction of the long head while also requiring shoulder stabilisation, making it a useful complement to heavier pressing exercises.
5. Dips
Dips are one of the most effective bodyweight exercises for building tricep strength and size. When performed with an upright torso, they place greater emphasis on the triceps rather than the chest.
How to Perform It
- Support yourself on parallel bars with your arms fully extended.
- Cross your ankles behind you and maintain an upright posture.
- Lower your body until your elbows reach roughly 90 degrees.
- Press yourself back to the starting position by extending your elbows.
- Repeat under control.
Home Alternative
If parallel bars are unavailable, bench dips can be performed using a sturdy bench or chair. However, many lifters find parallel-bar dips more comfortable on the shoulders.
6. Cable Tricep Pushdowns
Cable pushdowns remain a staple in most training programmes for a reason. They are easy to learn, highly effective and suitable for a wide range of experience levels.
How to Perform It
- Attach a rope handle to a cable machine.
- Stand facing the machine with your elbows tucked close to your sides.
- Grip the rope with a neutral hand position.
- Press the rope down until your arms are fully extended.
- Separate the rope ends slightly at the bottom to increase contraction.
- Return slowly to the starting position.
Training Tip
Don't allow the weight stack to rest completely between repetitions. Maintaining constant tension generally produces better results than relying on momentum.
7. Cable Pushaways
Cable pushaways combine elements of overhead extensions and pushdowns, creating a unique movement pattern that places considerable tension on the long head.
How to Perform It
- Attach a rope handle to the highest pulley setting.
- Stand facing away from the machine in a staggered stance.
- Position the rope behind your head with your elbows bent.
- Press the rope forwards until your arms are fully extended.
- Pause briefly before returning to the starting position.
Common Mistake
Avoid rocking your body forwards and backwards to generate momentum. The movement should come from the triceps, not the hips or torso.
8. Close-Grip Bench Press
The close-grip bench press is one of the best compound exercises for loading the triceps with heavier resistance. While the chest and shoulders remain involved, the triceps perform a larger share of the work compared with a traditional bench press.
How to Perform It
- Lie on a flat bench with your feet firmly planted on the floor.
- Grip the barbell slightly narrower than shoulder width.
- Unrack the bar and position it above your chest.
- Lower the bar under control until it lightly touches your chest.
- Press the bar back up until your arms are fully extended.
Training Tip
Your grip should be narrower than a standard bench press but not excessively close. A grip that is too narrow may place unnecessary stress on the wrists and elbows.
Training Frequency and Recovery
Training hard is only part of the process. Muscle growth occurs during recovery, which means your long head tricep workouts need to be balanced with adequate rest.
For most people, training the triceps two to three times per week provides sufficient stimulus without compromising recovery.
To support progress:
- Allow at least 48–72 hours between demanding tricep sessions
- Include shoulder mobility work and dynamic stretching
- Prioritise sleep and overall recovery
- Avoid taking every set to complete muscular failure
A balanced programme should include both isolation exercises and compound pressing movements. This combination helps build strength while ensuring the long head receives enough direct attention.
Frequently Asked Questions
What does the long head of the triceps do?
The long head assists with elbow extension, helping straighten the arm during pressing and pushing movements. Because it crosses the shoulder joint, it also contributes to shoulder extension and stability.
Which exercises target the long head most effectively?
Movements that place the arms overhead generally provide the greatest stretch and activation. Overhead dumbbell extensions, overhead cable extensions and cable pushaways are particularly effective options.
Are cable exercises better than free weights?
Both have advantages. Free weights can improve stability and allow natural movement patterns, while cables provide continuous tension throughout the range of motion. Including both in your programme often delivers the best results.
How many sets should I perform per week?
Most lifters see good results with approximately 10–20 quality sets for the triceps each week, depending on training experience and overall workload.
Final Thoughts
If your goal is to build stronger, more muscular arms, the long head of the triceps deserves dedicated attention. As the largest section of the triceps, it plays a major role in overall arm size and contributes to pressing performance across many upper-body exercises.
For those building a home gym, the Speediance Gym Monster 2 provides the versatility needed to perform many of these long-head tricep exercises in one compact system. With adjustable digital resistance, cable-based training and guided workout options, it offers a practical way to train for strength and muscle growth without requiring multiple separate machines.
