A 16-week triceps specialisation for advanced lifters: why the long head lags, how overhead work differs from pushdowns, and training around a sore elbow.
35 min read
Project Three Heads is a sixteen-week triceps specialisation for advanced lifters whose arms have stopped responding. It is built around one anatomical fact: three heads, one tendon, one job, and only the long head crosses the shoulder. Everything else in the block is resistance direction, joint position and progression. It is also built around the thing that ends most arm specialisations early, which is the elbow, so an entire system exists to keep training the patterns you tolerate while the ones you do not get changed.
What's Inside
Written for advanced lifters with at least three years of consistent, progressive training whose triceps have stalled despite regular arm work. It assumes you can judge your own proximity to failure, log loads and reps, and cut pressing volume for sixteen weeks so the specialisation has somewhere to go. Lifters with less training history should run a beginner or intermediate arm system first, and anyone with a current elbow injury needs assessment before starting.
Ten programming causes, and none of them is "train harder". The most common is exercise selection: three pushdown variations and no overhead work, which means the long head is never loaded in its stretched position. Close behind are a resistance profile where every set is hard in the same part of the range, no real progression because the load and reps have not moved in weeks, redundant volume from several movements that all do the same job, and constantly changing exercises so nothing accumulates a six-week record. Then come the execution faults: elbows flaring and drifting forward as the set gets hard, turning extensions into shoulder movements, and pushdowns progressing through a lean and a shrug rather than through elbow extension. Finally there is elbow irritation, which quietly shortens range and drops load, and poor fatigue management, where week five already feels like week fifteen. The guide diagnoses in a fixed order, elbow first, then execution, exposure, progression and recovery, because most stubborn triceps fail at the second or third step while most lifters go looking at the fifth. If the stall runs wider than one muscle, the Progress Bottleneck Engine applies the same logic to training, diet and recovery.
No, and that matters more than it sounds. All three heads fire in every extension, so emphasis is real but isolation is not. What changes between exercises is where the long head sits on its length-tension curve, which way the resistance pulls, how much of the load the triceps actually own, and how stable the setup is. Because only the long head crosses the shoulder, shoulder position is the one variable that changes its length: overhead it is stretched, at the side it is slack, and the lateral and medial heads are unaffected either way. That is why overhead extension, a pushdown and a press are not interchangeable even though all three extend the elbow. Trials comparing overhead with neutral-arm extension favour the overhead position for growth, which is why lengthened work leads in every session of this block, shortened work finishes, and mid-range work carries the heaviest loads. A flat-looking arm viewed from the side with the arm raised is the classic sign of too little long-head exposure.
By treating pain as a signal rather than a diagnosis. Elbow discomfort during triceps work is common and usually training-related, and the guide does not call it tendonitis or diagnose anything. Instead it grades the elbow green, yellow or red every session and gives a substitution ladder, where each rung is a complete route that keeps the pattern you tolerate while replacing the one you do not. The contributors it manages are the real ones: sudden volume jumps, too much extension volume, load increases that are too large, repeating the same provocative movement twice a week, taking free-weight extensions to failure, warming up poorly so the first working set is the hardest, and forcing a painful range. Red is never a training decision: sharp pain, swelling, locking, numbness or tingling, sudden strength loss, a specific injuring moment, or symptoms worsening week on week all mean stopping the provocative loading and getting a clinical assessment.
As four phases where volume steps at phase boundaries only, never climbing inside a phase. Each phase changes one thing: calibration first, so every load is matched to a true level of effort before anything is added; then accumulation, with techniques introduced one at a time; then intensification, with loading zones split across sessions so fatigue is distributed; then peak specialisation, ending in an assessment week rather than a demolition. Planned reductions sit inside the block and are mandatory, not optional. Progression is a decision, not a hope: every session ends with five questions asked in a fixed order, and the first yes decides the next session. The block also budgets your pressing, because every press loads the triceps and a specialisation that ignores chest and shoulder volume is two programs fighting over one muscle. Ten assessment answers set your track before Week 1 and are re-read at each checkpoint. The Workout Planner Engine fits it into your week, and the Protein Calculator and Calorie & Macro Calculator set the recovery side. Lifters with under three years of training should start with Project Sleeve Breaker instead.
The full Project Three Heads covers the three-head system, the biomechanics masterclass, the ranked exercise hierarchy across six roles, the ten-point assessment, the elbow-smart system and tolerance ladder, all four phases session by session, the progression engine, ten troubleshooting scenarios, recovery and integration, and a one-page command centre in detail. Download the PDF for the complete programme.
This page and the full guide are for educational purposes only. They are not medical advice, physiotherapy or an individual training prescription, and nothing here diagnoses an elbow problem. The programme assumes advanced lifters with sound technique and no current injury. Stop provocative loading and get a clinical assessment for sharp pain, swelling, locking, numbness or tingling, sudden strength loss, a specific injuring moment, or symptoms that persist or worsen week on week. This content is not for anyone under 18.
Usually because it is never loaded in a stretched position. Only the long head crosses the shoulder, so pushdowns and pressing leave it short while overhead and behind-head work lengthen it.
For the long head, trials favour the overhead position for growth, so lengthened work should lead. Pushdowns still earn a place for the lockout and for heavier, more stable loading.
No. All three heads work in every extension, so exercise choice shifts the emphasis without ever switching a head off.
Step down a substitution ladder to the variation you tolerate, keep failure on cables and machines rather than barbells, and raise volume in small planned steps. Sharp pain, swelling, numbness or sudden weakness needs assessment, not a workaround.
This guide is for educational purposes only and is not medical advice.
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