Ever finished a heavy set of dips, felt that intense burn in the back of your arms, and then realized your triceps still look a little flat? You might be wondering if you're actually hitting the right muscles, or if you're just wasting energy.
It’s a common frustration. Because of that, you see those guys in the gym with arms that look like horseshoes, and you wonder: are they doing dips, or are they doing something else? Specifically, are they targeting that long, meaty part of the tricep that gives the arm its thickness?
If you've ever felt like your dips are mostly hitting your chest or shoulders, you aren't alone. Let's get into the actual mechanics of what's happening when you lower yourself down between those bars.
What Is the Long Head of the Tricep?
To understand if dips hit the long head, we have to talk about how the triceps actually work. Think about it: most people think of the triceps as one single muscle. In reality, it’s a complex of three distinct heads: the lateral head, the medial head, and the long head Which is the point..
The Three Heads Explained
The lateral head is the one on the outside of your arm. Because of that, it’s what gives you that "width" when you look at your arm from the front. Then you have the medial head, which sits deeper and closer to the bone, acting as a stabilizer.
But the long head? That's why it’s the largest part of the triceps. It sits on the back of your humerus and, unlike the other two heads, it actually crosses the shoulder joint. That’s the star of the show for arm thickness. This is a massive distinction. Because it attaches above the elbow and reaches up toward the shoulder, it has a different job than the others.
The Role of Shoulder Position
Because the long head crosses the shoulder joint, it’s a "bi-articular" muscle. This is a fancy way of saying it has two jobs. It helps extend your elbow, but it also helps stabilize the shoulder and pull the arm down.
This is the "aha!Plus, " moment for most lifters. Most tricep exercises—like pushdowns or skull crushers—keep your arms at your sides. That's why when your arms are at your sides, the long head is "shortened. Plus, " It's already tucked in. Because it's shortened, it can't produce as much force. To truly target the long head, you need to put it under tension while it's in a stretched position But it adds up..
Counterintuitive, but true Not complicated — just consistent..
Why It Matters for Arm Growth
Why should you care about which head you're hitting? Because if you only focus on the lateral head, your arms will look wide from the front, but they’ll look thin and "flat" when you turn to the side.
The long head provides the mass. Still, it’s the muscle that fills out the back of the arm. If you want that thick, powerful look, you can't just stick to cable pushdowns. You need movements that force the long head to work through a large range of motion.
If you ignore the long head, you're essentially leaving half your potential arm growth on the table. It’s the difference between having "fit" arms and having "massive" arms.
How Dips Affect the Triceps
So, back to the main question: do dips hit the long head of the tricep?
The short answer is yes, but with a massive caveat. It depends entirely on your form and your body's anatomy Most people skip this — try not to. Surprisingly effective..
The Mechanics of the Dip
If you're perform a standard chest dip, you lean forward. Day to day, this shifts the load onto your pectorals. When you perform a "tricep-focused" dip, you keep your torso upright and your elbows tucked close to your ribs.
As you lower yourself, your elbows bend. In practice, this is where the magic happens. Because your elbows are moving from an extended position to a flexed position, the triceps are working hard to control the descent Practical, not theoretical..
The Stretch Factor
Here is the part most people miss: the long head is most active when the humerus (your upper arm bone) is positioned in a way that stretches the muscle.
In a dip, as you descend, you are putting the triceps in a position where they have to fight gravity to prevent you from collapsing. If you keep your elbows tucked and your torso upright, you are creating a significant amount of tension in the triceps. Because the long head is being stretched as you descend, it is absolutely being recruited to stabilize the joint and drive the movement.
It sounds simple, but the gap is usually here.
On the flip side, if you lean too far forward, the chest takes over. If you flare your elbows out too wide, your shoulders take the brunt of the load. To hit the long head, the dip has to be a vertical, controlled movement.
Common Mistakes / What Most People Get Wrong
I see people doing dips every single day, and honestly, most of them are doing them wrong if their goal is tricep hypertrophy.
Leaning Too Far Forward
If you're doing dips to build a massive chest, leaning forward is great. But if you want triceps, you need to stay upright. In real terms, the moment your chest points toward the floor, you've turned a tricep movement into a chest movement. You're shifting the tension away from the long head and onto the pectorals.
This is where a lot of people lose the thread.
Flaring the Elbows
This is a recipe for shoulder impingement. People think that by flaring their elbows out, they are "widening" the movement to hit more muscle. Practically speaking, all they are doing is putting immense stress on the anterior deltoid and the rotator cuff. Keep those elbows tucked. It keeps the tension on the triceps and keeps your joints safe.
Using Momentum
If you're using your legs to "bounce" out of the bottom of the dip, you aren't training your triceps; you're training your momentum. That said, the long head thrives on controlled eccentric movements—that's the lowering phase. If you drop like a stone and bounce, you miss the most important part of the rep where the long head is under the most tension The details matter here..
Practical Tips / What Actually Works
If you want to use dips as a primary tool for long-head development, you need a strategy. Don't just jump on the bars and start pumping.
1. Focus on the Eccentric
The lowering phase of the dip is where the long head is most vulnerable to growth. Feel the stretch in the back of your arms. Don't rush the descent. Practically speaking, take three full seconds to lower yourself. Control is everything here.
2. The "Upright" Cue
When you're on the bars, imagine there is a wall directly in front of your face. Try to keep your chest from touching that wall. This forces your torso to stay vertical, which keeps the load on the triceps and away from the chest Small thing, real impact..
3. Progressive Overload
Dips are a compound movement. Plus, once you can do 15–20 clean, upright dips, you've likely outgrown your body weight for pure hypertrophy. This is when you need to add weight. Use a dip belt. Adding even 5 or 10 pounds increases the tension on that long head significantly.
4. Supplement with Overhead Extensions
Look, I love dips. But if you want to be honest with yourself, dips alone might not be enough for a perfectly balanced arm. To truly hammer the long head, you should pair dips with an overhead movement—like a dumbbell overhead extension or a cable overhead extension. Since the long head is responsible for shoulder stability, putting it in a position where the arm is above the head provides a stretch that a dip simply cannot replicate No workaround needed..
It sounds simple, but the gap is usually here.
FAQ
Do dips hit the lateral head too?
Yes. Almost every tricep exercise hits all three heads to some degree. Dips are a compound movement, meaning they recruit the lateral and medial heads to assist the long head in extending the elbow.
Are dips better than skull crushers for triceps?
It depends on your goal. Skull crushers are an isolation movement, meaning they are excellent for targeting the triceps without much help from other muscles. Dips are a compound movement, meaning you can move much heavier weight, which is great for overall strength and mass. Most people benefit from doing both.
Why do my shoulders hurt when I do dips?
Usually, it's because of flared elbows
or a lack of scapular stability. If you allow your shoulders to roll forward or your elbows to flare out wide, you put immense pressure on the anterior deltoid and the rotator cuff. To fix this, keep your elbows tucked closer to your ribs and focus on "pinning" your shoulder blades down and back before you even begin the descent Easy to understand, harder to ignore..
Conclusion
The triceps long head is the "size" muscle of the arm. While the lateral head provides that outer width and the medial head provides density, it is the long head that fills out the back of the arm and creates that thick, horseshoe appearance when viewed from the side.
Dips are arguably one of the most potent tools for this, but only if you treat them with respect. If you treat them like a cardio movement—rushing through reps and relying on momentum—you are wasting your time. Still, if you prioritize a slow, controlled eccentric, maintain an upright torso to shift the load away from your chest, and progressively increase the weight, you will transform your triceps. Stop bouncing, start controlling, and let the tension do the work.
