Building bigger arms isn’t about fancy exercise variations or complex training protocols.
It’s about focusing on what actually drives muscle growth and cutting through all the noise that floods social media.
Fitness expert Sean Nalewanyj recently broke down the most effective approach to arm training, stripping away the gimmicks to reveal what really matters.
The principles are surprisingly straightforward, but they require consistent effort and progressive overload.
Jump to:
The Truth About Biceps Training
The biceps are relatively small muscles with one primary function: elbow flexion, or bending your arm. Despite countless variations flooding YouTube and Instagram, the reality is that most curling movements effectively stimulate both the long and short head of the biceps.
Nalewanyj dismisses the obsession with isolating individual heads. By the end of any set taken close to failure, both heads will be fully taxed regardless of the specific variation used.
All these videos showing you how to sculpt the taller biceps peak by biasing the long head, or how to get wider biceps by hitting the short head, that’s really just clickbait that distracts you from the things that actually matter for proper biceps exercise selection.
Three Critical Factors For Exercise Selection
Instead of chasing specific muscle heads, focus on these evidence-based criteria:
First, use a supinated grip. This hand position maximizes biceps engagement. As you rotate toward neutral, you shift emphasis to the brachialis, and pronated grips target the brachioradialis in the forearm more heavily.
Second, prioritize comfort. Find variations that feel smooth on your joints and allow progressive overload over time. Barbell curls work perfectly for some people, while others experience discomfort as weights increase. No single variation produces dramatically superior results, so there’s no reason to force movements that cause pain.
Third, emphasize curls that are heaviest in the bottom half of the range. Research suggests biceps grow best when trained at longer muscle lengths. While squeeze-based movements create an intense feeling from blood pooling and muscle bunching, that sensation doesn’t necessarily translate to better growth.
Mechanical tension, which is the actual driver of hypertrophy, it’s not something you can consciously feel since there are no nerves inside the muscle fibers to detect it.
Top Biceps Exercise Choices
Preacher curls maximize load in the lengthened position since they’re heaviest at the bottom. The pad provides stability, and they can be performed with barbells, dumbbells, or machines.
Different machines have varying resistance profiles. If your machine is heavier at the top, slide your elbows behind the pivot point to shift more load to the bottom position.
Facing-away cable curls offer another excellent option. Performed single-arm or with a straight bar between your legs, these hit the biceps when they’re most lengthened. Remember that cable curls are hardest where your forearms form a 90-degree angle with the cable.
Free-weight barbell and dumbbell curls remain timeless for good reason. These mid-position focused movements have built impressive arms for decades. Nalewanyj himself used nothing but these variations for his first five years of training with excellent results.
Proper Execution Matters
While curls are straightforward, execution details make a difference:
- Minimize swinging and momentum – slight natural movement is acceptable, but excessive body English reduces effectiveness
- Use controlled negatives – don’t let weights free-fall, though you don’t need exaggerated slow tempos
- Keep elbows relatively stationary – dragging elbows forward shifts emphasis to shoulder flexion and front delts
The Triceps Blueprint
Triceps comprise roughly two-thirds of upper arm mass, making them crucial for overall arm size. They’re approximately equal in volume to pecs, lats, and traps.
The muscle contains three heads: medial, lateral, and long head. Understanding their anatomy is essential for complete development.
Why The Long Head Needs Special Attention
The medial and lateral heads only perform elbow extension, so any pressing or extension movement trains them effectively. The long head is different.
Because it crosses the shoulder joint and performs both elbow extension and shoulder extension, compound presses don’t adequately challenge it. During pressing movements, the long head shortens at the elbow while simultaneously lengthening at the shoulder, meaning it doesn’t change significantly in length and experiences minimal tension.
If you’re relying on the big compounds only, your triceps long head will likely be underdeveloped. And this is a case where isolation work is essential for maximum growth.
Pushdowns: The Foundation Movement
Pushdowns serve as the primary triceps isolation exercise because the long head has optimal leverage for elbow extension when the shoulder is neutral with arms at your sides.
Countless variations exist—straight bar, rope attachment, single-arm, or cross-body. Most differences come down to personal preference and joint comfort. Standing closer to the machine emphasizes the lengthened position, while standing farther away targets the shortened position.
For advanced lifters who’ve become very strong, seated variations or wearing a weight belt while standing can provide additional stability to prevent the stack from pulling you upward.
Stretch-Position Training
Skull crushers and overhead extensions train the long head in stretched positions. Since the long head performs shoulder extension, placing the shoulder into flexion creates that stretch.
For skull crushers, dumbbells typically work best because they allow freedom of movement at shoulders and elbows without requiring cable setup. You can lower weights toward your forehead for pure elbow extension, or tilt arms back and lower behind your head to challenge shoulder extension while being easier on elbows.
Overhead extensions provide the most stretch-focused stimulus. Single-arm dumbbell or cable variations usually feel most comfortable and allow for proper execution without joint stress.
Volume And Intensity Guidelines
For both biceps and triceps, three to six direct sets per week provides sufficient stimulus when combined with compound work. This assumes genuine hard training—lifting within a rep or two of failure with occasional sets taken to complete failure.
Since biceps receive stimulus during back exercises and triceps work hard during chest and shoulder pressing, direct isolation volume can remain moderate. Quality trumps quantity.
Four to 10 reps per set works well for arm training. This isn’t about chasing pumps or burns—it’s about training close to failure and progressing loads over time. The same principles apply regardless of whether you’re doing compound movements or isolation exercises.
For those with joint sensitivities, pushing toward the upper end of that rep range can minimize stress while still providing adequate stimulus.
The Bottom Line On Arm Growth
Building impressive arms doesn’t require complicated periodization schemes or exotic exercise variations. It requires consistent execution of fundamental movements with progressive overload.
Choose variations that feel comfortable on your joints, emphasize loaded stretches for optimal muscle stimulation, and train with genuine intensity close to failure. Most people waste time on unnecessary volume when a few hard sets would produce better results.
The difference between mediocre and exceptional arm development often comes down to proper exercise selection combined with the discipline to progressively increase loads over months and years. Skip the gimmicks, master the basics, and focus relentlessly on getting stronger within these proven movement patterns.
