Tricep Workout for Beginners: Fill Out the Back of Your Arms

If you want bigger arms, a tricep workout for beginners will do more for you than another month of curls. The triceps make up about two thirds of your upper arm, and they're the part people see when your arm is just hanging at your side.

Most beginners give the triceps a few sets of rope pushdowns at the end of chest day, half-lockout, with whatever weight the last person left on the stack. The arm stays flat from the side and the back of it looks soft in every photo. The triceps have three heads, and the biggest one (the long head) barely gets trained by pressing or pushdowns alone. Fix that with the right exercises and most beginners see a fuller arm within 8 to 10 weeks.

Before

After

The work, step by step

1. Know the three heads and why the long one matters. The triceps has a lateral head (the horseshoe on the outside of the arm), a medial head (underneath, near the elbow) and a long head that runs down the back and inside of the arm. The long head is the biggest, and it's the only one that crosses the shoulder joint, so it gets fully stretched only when your arm is raised overhead. Pushdowns and bench presses work all three, but they keep the long head short. That's why this plan always includes one overhead movement. Skip it and you're training the smallest part of the muscle hard and the biggest part lightly.
2. Overhead cable or dumbbell extension: 3 sets of 8 to 12. This is the main exercise. With a cable, set the pulley low, grab a rope, turn away from the stack and lean forward slightly with the rope behind your head. With a dumbbell, sit on a bench with back support and hold one dumbbell with both hands behind your head. Lower until you feel a real stretch in the back of your arm, then extend until your arms are almost straight. Keep your elbows pointing forward, not flared out to the sides. Most beginners start around 10 to 16 kg with one dumbbell. If your elbows ache, drop the weight and slow the lowering phase down to 3 seconds before you give up on the movement.
3. Close-grip bench press or dips: 3 sets of 6 to 10. This is your heavy lift, the one where the triceps move real weight. For a close-grip bench, put your hands about shoulder width apart (not touching, which is hard on the wrists), tuck your elbows to roughly 30 to 45 degrees from your body and touch the bar to your lower chest. Most beginners use 70 to 80% of their normal bench weight. If you prefer dips, keep your body fairly upright so the triceps do the work, and go down until your upper arms are about parallel to the floor. Can't do 6 dips yet? Use the assisted dip machine or a band looped over the bars.
4. Rope pushdown: 3 sets of 10 to 15. Now the pushdown earns its place, as a finisher for the lateral head. Pin your elbows to your sides, push the rope down and pull the ends apart at the bottom, then pause for a second with your arms fully straight. That lockout is where most people cheat: they bounce the stack halfway and let their shoulders roll forward to move more weight. Pick a weight you can hold at the bottom for a full second on every rep. If you have to lean over the rope and use your bodyweight, it's too heavy.
5. Skull crusher as your second-day option: 3 sets of 8 to 12. Lie on a flat bench with an EZ bar or two dumbbells, arms straight up over your chest. Bend at the elbows and lower the weight to just behind the top of your head, not onto your forehead, then press back up. Letting the weight travel slightly behind your head keeps tension on the long head and is kinder to your elbows. Start light: an empty EZ bar or 6 to 10 kg dumbbells is plenty. The name makes it sound dangerous, but with a controlled tempo and a sensible weight it's one of the best triceps builders there is.
6. Run it twice a week for 12 weeks. Day A: overhead extension 3x8-12, close-grip bench or dips 3x6-10, rope pushdown 2x10-15. Day B: skull crusher 3x8-12, overhead extension 2x10-12, rope pushdown 3x10-15. Put two or three days between them and attach them to the end of a chest or push session if you have one. That's 8 to 9 direct sets a session on top of the triceps work you already get from pressing, which is plenty for a beginner. Add reps until you hit the top of the range on every set, then go up in weight. Pair it with two days of biceps work, eat around 1.6 g of protein per kg of bodyweight, and keep a small calorie surplus if you're slim. Arms barely grow on a big deficit.

Common pitfalls

• Only doing pushdowns. You're training the lateral head and leaving the long head, the biggest part of the arm, almost untouched.
• Flaring your elbows wide on overhead extensions and skull crushers. It shifts the load to your shoulders and makes your elbows sore within a few weeks.
• Going too heavy on skull crushers too soon. Elbows adapt slower than muscle, so build up over weeks, not sessions.
• Stopping pushdowns halfway. The full lockout with a short pause is the part of the rep that does the work.

Pro tip: Check your progress with a side photo, arm relaxed and hanging at your side, phone at shoulder height, same window light every 4 weeks. Triceps growth shows up as a fuller curve on the back of the arm, and a flexed front-on biceps shot will hide almost all of it.

How Muscle Editor fits in

Want to see what this plan can add? Run a relaxed side photo through Muscle Editor's Arms editor at Fit. That's close to what 4 to 6 months of consistent triceps and biceps work can look like, and having that picture on your own arm makes the slow weeks easier. Keep it as a goal picture, not a progress pic.

Frequently asked questions

Filed under Workouts. Tagged: arms, triceps, workout, beginners.