Arm Hypertrophy Workout for Bigger Biceps and Triceps (Machine + Dumbbell)
Gym | Single Workout | Beginner: 4 exercises
This arm-focused hypertrophy workout is designed to maximize muscle growth in both the biceps and triceps using a combination of leverage machines and dumbbells. With descending reps (15, 12, 10, 10), the program encourages progressive overload while increasing intensity across each set. This is a gym-based workout ideal for beginners to intermediate lifters looking to build size, improve arm definition, and strengthen elbow flexion and extension patterns.
The workout primarily targets the biceps brachii, brachialis, brachioradialis, and all three heads of the triceps (long, lateral, and medial). By combining machine-based stability with unilateral dumbbell work, you get both controlled tension and improved muscular balance.
"Lever Preacher Curl" focuses heavily on the biceps brachii, especially the short head, due to the shoulder-flexed position on the preacher pad. The machine provides constant tension and stability, allowing you to isolate the elbow flexors without momentum. Keep your upper arms glued to the pad, control the lowering phase for 2–3 seconds, and avoid lifting your elbows off the support. This movement sets the tone for the workout by pre-fatiguing the biceps in a strict, controlled manner.
"Lever Triceps Extension" shifts the focus to the triceps, primarily targeting the long and lateral heads depending on elbow positioning. Maintain a neutral spine and keep your elbows fixed as you extend the arms fully without locking out aggressively. Control the eccentric phase to maximize time under tension. Pairing this after biceps work balances elbow joint stress and ensures complete upper arm development.
"Dumbbell One Arm Zottman Preacher Curl" adds a unilateral and rotational component to further challenge the arm muscles. The supinated curl on the way up targets the biceps, while the pronated lowering phase emphasizes the brachioradialis and forearm extensors. Perform the movement slowly and deliberately, especially during the rotation at the top. Avoid swinging or rushing the eccentric. This exercise enhances forearm thickness and improves overall arm aesthetics while correcting strength imbalances between sides.
"Dumbbell One Arm Triceps Extension" isolates each triceps individually, helping address muscular asymmetries. Whether performed seated or standing, keep your elbow pointing upward and close to your head. Lower the dumbbell under control to achieve a deep stretch in the long head of the triceps, then extend fully without flaring the elbow outward. This movement complements the machine extension by placing the triceps under a different resistance curve and increasing stabilization demands.
Overall, this workout is excellent for arm hypertrophy, muscle symmetry, and improved elbow joint strength. Rest 60–90 seconds between sets to maintain intensity while allowing partial recovery. Perform this workout 1–2 times per week, ideally after a larger upper-body session or as a dedicated arm day. Begin with 5–10 minutes of light cardio and dynamic elbow and shoulder mobility drills before starting.
To progress, gradually increase weight as you hit the top rep range with good form, slow down the eccentric phase for more time under tension, or add an additional set to the final two exercises. Stay consistent, focus on strict technique, and you’ll build stronger, fuller, and more defined arms over time.
