Growing your triceps comes down to three things: choosing exercises that challenge all three heads of the muscle, training at the right volume, and progressively increasing the demand over time. The triceps make up roughly two-thirds of your upper arm mass, so if bigger arms are the goal, triceps deserve more attention than biceps.
Why Three Heads Matter
The triceps brachii has three distinct sections, each originating from a different point but all merging into one tendon that attaches at the elbow. All three heads straighten your arm at the elbow, but the long head has an extra job: it crosses the shoulder joint, meaning it also assists with pulling your arm down and back. This is the key detail that shapes your exercise selection.
The lateral head sits on the outer part of your upper arm and is the most visible from the side. The medial head sits deeper, closer to the bone, and fires during virtually every elbow extension regardless of grip or arm position. The long head runs along the inner-back portion of the arm and is the largest of the three. Because it attaches at the shoulder blade rather than the upper arm bone, its level of activation changes dramatically depending on where your arm is positioned during an exercise.
Overhead Work Drives the Most Growth
A 2022 study in the European Journal of Sport Science compared cable triceps extensions performed overhead versus at the side with a neutral arm position. The results were striking. Overall triceps growth was 1.4 times greater in the overhead group (+19.9%) compared to the neutral group (+13.9%). The long head specifically grew 1.5 times more with overhead work (+28.5% vs. +19.6%). Even the lateral and medial heads saw 1.4 times more growth in the overhead position.
The reason is stretch. When your arm is overhead, the long head is pulled to a longer length before you even start the rep. Training a muscle at longer lengths creates greater metabolic stress and triggers more of the growth signals that drive hypertrophy. The practical takeaway: overhead triceps extensions, whether with a cable, dumbbell, or EZ bar, should be a staple in your program. And here’s the bonus: the overhead group in that study used lighter loads than the neutral group and still grew more. You don’t need to go heavy on these to get results.
Best Exercises by Head
Long Head
Any movement that puts your arm overhead will bias the long head. Overhead cable extensions, seated dumbbell overhead extensions, and incline overhead extensions all work. The key is a full stretch at the bottom of each rep, with your elbows pointing forward (not flared wide) and a controlled lowering phase.
Lateral Head
The lateral head responds well to pressing movements and pushdowns where your arms stay at your sides or slightly behind you. Cable pushdowns with a rope or V-bar, close-grip bench press, and triceps dips all hit the lateral head effectively. Keeping your grip relatively narrow during pushdowns increases lateral head involvement. When using a rope, splitting the ends apart at the bottom of each rep adds extra contraction at the peak.
Medial Head
The medial head is active during nearly all elbow extension movements regardless of arm position or grip. It’s the workhorse that fires first and stays engaged throughout. Reverse-grip pushdowns and close-grip bench press recruit it well, but honestly, if you’re doing a mix of overhead and pushdown movements, the medial head is getting plenty of work.
How Many Sets Per Week
A systematic review of resistance training volumes found that higher training volume produces significantly better triceps growth than low volume. The review recommended 12 to 20 weekly sets per muscle group as the optimal range for trained individuals looking to maximize hypertrophy.
That said, your triceps already get indirect work from pressing movements like bench press, overhead press, and dips. If you’re doing 8 to 10 sets of pressing per week, you may only need 6 to 10 sets of direct triceps isolation work to land in that 12 to 20 total range. If you’re not doing much pressing, aim for the higher end of direct sets.
Splitting that volume across two sessions per week makes sense for most people. Research on bench press recovery shows that triceps peak force returns to baseline quickly after training (within 48 hours for most measures), while total work capacity can still be slightly reduced at 48 hours. Spacing your triceps-focused sessions at least two days apart gives you enough recovery to train hard in both sessions.
How to Progress Over Time
Progressive overload is what separates people who build muscle from people who maintain what they have. For triceps, the simplest approach is to work within a rep range of 8 to 12, and when you can complete the top of that range with good form for all your sets, increase the weight by 5 to 10%. This drops you back toward 8 reps, and you build back up again.
When adding weight isn’t practical (common with cable machines that jump in large increments), you have other options. Add one rep per set each week. Add an extra set, moving from 3 to 4 working sets over a few weeks. Slow down the lowering phase to 3 seconds per rep. Use drop sets on your last set, reducing the weight and continuing to failure. All of these increase the total demand on the muscle without requiring more weight on the stack.
The general guideline is to increase total training stress by no more than 10% per week. For triceps, that might mean adding one set across the week, or adding 2 to 3 reps total across your sets, or bumping the weight on one exercise. Small, consistent jumps beat large, unsustainable ones.
Protecting Your Elbows
Elbow pain is the most common issue that derails triceps training, and it almost always comes from the same handful of mistakes. Skull crushers with a straight barbell force your wrists and elbows into a fixed angle that increases tendon stress. Switching to an EZ curl bar or dumbbells lets your joints find a more natural path. Going too heavy on any extension movement leads to compensations like flaring your elbows outward or using momentum, both of which overload the tendons rather than the muscle.
Excessive depth is another culprit. On dips and extensions, lowering past the point where you feel a full stretch and into a position where your elbows ache puts unnecessary strain on the tendon attachment at the elbow. Control the bottom of every rep. If you feel a sharp pull at the elbow rather than a stretch in the muscle belly, you’ve gone too deep.
Cable pushdowns are generally the most joint-friendly triceps exercise. If your elbows are already irritated, start your sessions with pushdowns to warm up the tendons before moving to overhead or extension work. And prioritize lighter, higher-rep overhead extensions over heavy ones. The research shows you don’t need heavy loads in the stretched position to get superior growth.
A Simple Weekly Template
Here’s how a practical triceps plan might look across two sessions per week:
- Session 1: Overhead cable extension, 3 to 4 sets of 10 to 12 reps (long head emphasis). Close-grip bench press or dips, 3 sets of 8 to 10 reps (lateral and medial head emphasis, plus compound strength).
- Session 2: Dumbbell overhead extension, 3 sets of 10 to 15 reps (long head emphasis at a different angle). Cable pushdown with rope, 3 to 4 sets of 10 to 12 reps (lateral head emphasis).
That gives you 12 to 14 direct sets per week, plus whatever indirect volume you’re getting from chest and shoulder pressing. Every session includes one overhead movement for the long head stretch benefit and one pressing or pushdown movement for the lateral and medial heads. Adjust the total sets up or down based on how your elbows feel and whether you’re still making progress week to week.