Best Exercises for Bigger Arms: Biceps & Triceps
Want bigger arms? This guide covers the best bicep and tricep exercises, how to program them, and the mistakes that keep your arms from growing.
Big arms are one of the most sought-after results in fitness. And while heavy compound lifts build the foundation, targeted arm training accelerates growth and shapes the muscles. Here's exactly what to do.
Anatomy First: What You're Training
Biceps (front of arm):
- Biceps brachii (long head + short head) — the peak and width
- Brachialis — underneath the bicep, pushes it up
- Brachioradialis — upper forearm
Triceps (back of arm):
- Triceps brachii (3 heads: long, lateral, medial)
- The tricep makes up ~60% of upper arm size — it's actually more important than the bicep for overall arm size
The Best Bicep Exercises
1. Barbell Curl
The classic mass builder. The barbell allows you to load heavy and progressively overload consistently.
- Grip shoulder-width, elbows pinned to sides
- Curl fully to the top, squeeze hard
- Lower slowly (3 seconds down)
- 3–4 sets × 8–10 reps
2. Incline Dumbbell Curl
The incline angle stretches the long head of the bicep through a greater range of motion, creating more tension at the bottom — one of the most effective bicep exercises.
- Set bench to 45–60° incline
- Arms hang straight down
- Curl without letting elbows drift forward
- 3 sets × 10–12 reps
3. Hammer Curl
Targets the brachialis and brachioradialis, adding thickness and width to the arm that regular curls don't hit.
- Neutral grip (palms facing each other)
- Keep elbows still
- Curl to shoulder height
- 3 sets × 12 reps
4. Cable Curl
Cables maintain constant tension throughout the movement — unlike free weights, which lose tension at the top. Great as a finisher.
- Low pulley attachment
- Curl up fully, squeeze at top
- 3 sets × 12–15 reps
The Best Tricep Exercises
1. Close-Grip Bench Press
The best mass builder for triceps. Heavy load, compound movement, direct stimulus.
- Grip slightly narrower than shoulder-width
- Lower to lower chest, elbows at ~30° from body
- Press to full lockout
- 4 sets × 6–8 reps
2. Cable Tricep Pushdown
The most popular and effective tricep isolation movement. Easy to feel the contraction and load effectively.
- Rope or bar attachment, high pulley
- Elbows pinned to sides
- Push down to full extension, squeeze
- 3–4 sets × 12–15 reps
3. Overhead Tricep Extension (Cable or Dumbbell)
The overhead position stretches the long head of the tricep — the largest of the three heads. Essential for complete arm development.
- Dumbbell or cable overhead
- Lower behind head, elbows pointing up
- Extend to full lockout
- 3 sets × 10–12 reps
4. Skull Crushers
A demanding but highly effective tricep mass builder.
- EZ-bar or dumbbells, lying on bench
- Lower bar to forehead (carefully)
- Extend back to start
- 3 sets × 10–12 reps
Sample Arm Day Program
Superset format (bicep + tricep alternating — saves time and keeps blood in the arms):
| Superset | Bicep Exercise | Tricep Exercise | Sets × Reps |
|---|---|---|---|
| A | Barbell Curl | Close-Grip Bench | 4 × 8 |
| B | Incline DB Curl | Skull Crushers | 3 × 10 |
| C | Hammer Curl | Pushdown | 3 × 12 |
| D | Cable Curl | Overhead Extension | 3 × 15 |
Rest 60 seconds between supersets.
Common Mistakes Keeping Your Arms Small
Mistake 1: Not training triceps enough Most people obsess over biceps and neglect triceps. Since triceps = 60% of arm size, this is backwards.
Mistake 2: Using too much momentum Swinging the weight on curls removes tension from the bicep and transfers it to the shoulder. Use lighter weight and stricter form.
Mistake 3: Not training through full range of motion Full stretch at the bottom and full contraction at the top. Partial reps = partial gains.
Mistake 4: Not progressing If you've been doing the same weight for months, your arms won't grow. Add weight or reps every 1–2 weeks.
How Often to Train Arms
- Beginners: 1–2 dedicated arm sessions per week is plenty (plus indirect work from rows and presses)
- Intermediate/Advanced: 2–3 arm-focused sessions, with higher volume
Your arms get stimulated indirectly every time you do chest, back, and shoulder work — dedicated arm sessions are the finishing touch, not the foundation.
Train heavy, stretch the muscle, and progressive overload every week — your arms will grow.
IronVibe Team
Our team of certified fitness trainers and nutritionists create evidence-based content to help you reach your fitness goals faster.
