GZCL Method (4-Day)
Structure Without a Straitjacket
Most strength programs tell you exactly what to do. GZCL tells you how to think about what to do, then lets you fill in the details. The result is a system that has quietly become one of the most popular intermediate programs on the internet — not through marketing, but through a decade of forum posts by people saying "I ran GZCL and it just worked."
Cody Lefever, a competitive powerlifter who posts as /u/gzcl on Reddit, published the method around 2012. The core idea is elegant: organize your training into three tiers based on intensity, and distribute your effort accordingly. The heavy compounds get the heaviest weight and lowest reps. The supporting lifts get moderate weight. The isolation work gets light weight and high reps. Simple. Flexible. Effective.
The system has spawned several variants — GZCLP (the linear progression version for beginners), UHF, Jacked & Tan, and more. This template is the standard 4-day structure that most intermediate lifters use.
How It Works
Every workout is built from three tiers:
| Tier | Purpose | Sets x Reps | Intensity | Rest |
|---|---|---|---|---|
| T1 | Primary compound lift | 5x3 | 85-95% | 3-5 min |
| T2 | Secondary compound lift | 3x10 | 65-75% | 2-3 min |
| T3 | Isolation / accessories | 3x15+ | Light | 60-90s |
T1 — The Heavy Lift. One main compound per day: squat, bench, overhead press, or deadlift. Five sets of three reps, heavy enough that rep five of set five is a genuine effort. This is where you build peak strength.
T2 — The Volume Lift. A complementary compound movement at moderate weight. Three sets of ten. The T2 supports the T1 — if your T1 is squat, your T2 might be bench (or front squat, or Romanian deadlift). This is where you build muscle and practice movement patterns under lighter load.
T3 — The Accessories. Isolation work, machine exercises, whatever addresses your weak points. Three sets of fifteen or more reps. This is where you build the supporting muscles, address imbalances, and accumulate the kind of volume that drives hypertrophy in smaller muscle groups.
The 4-Day Split
| Day | T1 | T2 | T3 |
|---|---|---|---|
| 1 | Squat | Bench Press | Lat Pulldown, Leg Curl, Leg Extension |
| 2 | OHP | Deadlift | Dumbbell Row, Lateral Raise, Face Pull |
| 3 | Bench Press | Squat | Cable Row, Dumbbell Curl, Tricep Pushdown |
| 4 | Deadlift | OHP | Pull-Up, Leg Press, Ab Wheel |
Rest days are flexible — most people run it Monday/Tuesday/Thursday/Friday or any four non-consecutive days.
Progression
The progression scheme is where GZCL gets clever.
T1 progression: Start with a weight you can do 5x3 cleanly. When you can complete all 15 reps across the 5 sets, add 2.5 kg / 5 lbs next session. If you fail to hit 5x3, drop to 6x2 at the same weight. If you fail 6x2, drop to 10x1. If you fail 10x1, test a new max and reset at a lower training weight. This built-in regression means you never truly stall — you just shift the rep scheme while maintaining intensity.
T2 progression: Linear. Add weight when you complete all sets and reps. If you stall, drop the weight 10% and build back up.
T3 progression: When you hit the top of your rep range on all sets (e.g., 3x20 when the target is 15-20), add weight.
This tiered progression is the real genius of the system. You can push your heavy lifts without grinding into a plateau, because there's always a next step that isn't "just try harder."
Who Should Run This
The GZCL method works well for:
- Intermediate lifters (6+ months of consistent training) who want structured progression beyond simple linear programs
- Lifters who value flexibility in exercise selection — the T2 and T3 slots are completely customizable
- Anyone who wants to build strength and size simultaneously without choosing between a powerlifting program and a bodybuilding program
- People who are tired of cookie-cutter programs and want to understand the principles behind programming
This is not a beginner program. If you're still making progress adding weight every session on a program like Starting Strength or StrongLifts, keep doing that. GZCL is for when linear progression stops working and you need a smarter structure.
It's also worth noting that GZCL requires some self-knowledge. You pick your T2 and T3 exercises based on your own weaknesses. If you don't know what your weaknesses are, a more prescriptive program might serve you better for now.
The Spreadsheet Tradition
GZCL has always been a spreadsheet program. Lefever published the method as a series of blog posts and Reddit write-ups, and the community built Google Sheets templates to run it. For years, "running GZCL" meant downloading someone's spreadsheet, plugging in your maxes, and tracking your sessions in a tab.
This works. It's also clunky. You're squinting at a phone screen, scrolling sideways through columns, trying to remember if you're on set 3 or set 4. The data is technically there, but it's not really doing anything for you — no progression tracking over time, no rest timer, no history you can easily search.
The .trn file below captures the full 4-day template with all tiers, exercises, and notes. Import it into the TRN app and let the app handle the tracking while you focus on the lifting.
Download
Download the .trn file and import it into the TRN app. Four training days, the full T1/T2/T3 structure, every exercise with notes on form and progression. Lefever would probably still prefer the spreadsheet. You don't have to.