Best Lifting Programs Compared: 5x5, 5/3/1, nSuns, GZCLP, PHUL, PHAT

Six programs dominate every "what should I run" thread: 5x5, GZCLP, nSuns, 5/3/1, PHUL, and PHAT. They are all proven. They are also built for different lifters, and running the wrong one for your training age is the most common reason people stall or burn out.

The short version: in your first year, run a linear progression (5x5 or GZCLP) and add weight every session while you still can. As session-to-session gains dry up, move to weekly progression with more volume (nSuns or PHUL). When even weekly progress stalls, monthly waves (5/3/1) or high-volume specialization (PHAT) are the tools that keep the bar moving.

All six programs at a glance

The beginner tier: 5x5 and GZCLP

5x5 (StrongLifts and its variants). Three full-body sessions per week alternating two workouts: squat/bench/row and squat/overhead press/deadlift, five sets of five, adding 2.5 kg every session. Its power is the progression speed: a new lifter can add over 100 kg to their squat in a year of clean linear progression. Its weakness is what it leaves out: five compound lifts and nothing else means minimal direct work for arms, side delts, and upper back, and 5x5 squatting three times a week gets brutally heavy right when the novice window closes.

GZCLP fixes the stall problem with structure. Each session has a tier-1 heavy lift (5 sets of 3, last set AMRAP), a tier-2 volume lift (3 sets of 10), and tier-3 isolation (3 sets of 15+). When you stall, the program prescribes the next rep scheme instead of a blind reset: 5x3 becomes 6x2, then 10x1, then a weight reset. It is the better-engineered linear progression, at the cost of being slightly harder to learn.

Verdict: either beats everything else for your first 6-12 months, because nothing grows strength faster than progression every single session. Pick GZCLP if you want built-in stall handling and some hypertrophy work; pick 5x5 if you want maximum simplicity. Add curls and lateral raises to either, your arms will thank you.

The intermediate tier: nSuns and PHUL

nSuns takes 5/3/1's wave loading and compresses it into weekly progression with much more volume: 9 sets on the main lift (topping in an AMRAP that sets next week's weights), 8 sets on a secondary lift, then accessories, across 4-6 days. It produces fast strength gains for late beginners because the volume dose is enormous. That is also the warning label: sessions run 90+ minutes and the fatigue cost is the highest on this list. Run it when recovery is dialed in, not alongside a cutting diet and 6 hours of sleep.

PHUL (Power Hypertrophy Upper Lower) is the balanced pick: four days on an upper/lower structure, two power days (3-5 reps on the big lifts) and two hypertrophy days (8-12 reps, more machines and isolation). Every muscle gets trained twice per week, the frequency a 2016 meta-analysis by Schoenfeld et al. linked to roughly 63% more growth than once weekly, and a 2018 meta-analysis by Grgic et al. associated with faster strength gains too.

Verdict: PHUL for most intermediates, because it trains strength and size in the same week at a recoverable dose. nSuns for a focused 3-6 month strength push when you can eat and sleep for it.

4-Day Upper/Lower plan, free in HyproPHUL-style power and hypertrophy alternation, pre-built with every set and rep, plus Smart Progression targets computed from your training history.hypro.app

The advanced tier: 5/3/1 and PHAT

5/3/1 (Jim Wendler) accepts that advanced strength comes monthly, not weekly. Each lift works off a training max (90% of your true 1RM) through three-week waves: a 5s week, a 3s week, and a 5/3/1 week, each capped by an AMRAP top set, then the training max climbs 2.5 kg (upper body) or 5 kg (lower body) per cycle. Assistance templates like Boring But Big bolt on hypertrophy volume. It is nearly unbreakable because the loading is conservative by design; the flip side is that impatient lifters find it slow, and run "too light" cycles without the AMRAP effort that makes it work.

PHAT (Layne Norton's Power Hypertrophy Adaptive Training) is the physique-focused endgame: five days, two power days (upper and lower, 3-5 reps), three hypertrophy days (back and shoulders, legs, chest and arms) with speed work and 8-20 rep pumping volume. Weekly volume per muscle lands at the top of the 10-20 set range and beyond (Schoenfeld et al., 2017). It builds impressive size on lifters who can recover from it, and flattens everyone else. Treat it like the advanced tool it is.

Verdict: 5/3/1 if strength is the goal and you think in years. PHAT if size is the goal, your recovery is excellent, and you have 2+ years of training behind you.

What the research says about choosing

Two findings cut through most program debates:

• For strength, load matters. A 2023 network meta-analysis by Currier et al. across 178 studies ranked higher-load, multi-set prescriptions as the most effective for 1RM strength. That favors the heavy top sets in 5/3/1, nSuns, and the power days of PHUL/PHAT.
• For size, volume and effort matter, load barely does. The same analysis found hypertrophy was similar across load ranges, and a 2025 analysis by Pelland et al. of 67 studies confirmed weekly volume is the strongest growth predictor. That is why the hypertrophy days in PHUL and PHAT, and the tier-2/3 work in GZCLP, do the physique building.

In other words: every program on this list works for its stated goal. The differences are progression speed, volume dose, and recovery cost, which is why training age should drive the choice. If you mainly want muscle and the barbell numbers are secondary, a simpler split built around weekly volume targets gets you there with less complexity.

The part every program leaves out: tracking

All six programs are progression rule sets. 5x5 needs last session's weights. nSuns computes next week from this week's AMRAP. 5/3/1 needs your training max and cycle position. PHUL and PHAT need double progression history on 20+ exercises. The moment you guess instead of track, the program stops being the program.

Spreadsheets solve this until a set at the gym does not match a cell. An app that logs sets and computes the next targets removes the failure point: Hypro's Smart Progression suggests weight and reps per set from your actual history, which is the same job as the spreadsheet, minus the guessing.