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Published 13 Sep 2026
Push pull legs groups your training by what the movement does rather than by the muscle it hits: pressing on one day, pulling on another, legs on a third. It is a good structure, and it is recommended far more often than it fits.
The reason to group this way is that muscles which work together get trained together and then rest together. Your triceps assist every press, so training them on the same day as your chest costs less recovery than spreading them across the week. The same logic applies to biceps and back.
That is the whole idea. Everything else about push pull legs, how many days, in what order, how often, is a scheduling question, not part of the split.
Run once through, it is a three-day week: each pattern trained once, plenty of recovery, and a structure that survives a busy month. Run twice, it is six days: each pattern twice, considerably more weekly work, and a schedule with no slack in it at all.
Between those sits the version most people end up running: the cycle repeats whenever the days allow rather than on fixed weekdays. It drifts relative to the calendar and it is the sturdiest of the three, because a missed day delays the cycle instead of deleting a session.
Every structure trades something for something else. This is what this one buys you, and what it charges for it.
| It does well | It costs |
|---|---|
| assisting muscles train on the same day as the lifts that use them | at three days, each muscle is trained once every seven days, which is on the low side past the beginner stage |
| every session has a clear theme | at six days, it needs six days most weeks, for months; miss two and the split stops being what it claims |
| it scales from three days to six without a redesign | leg day is the longest, hardest session and the one most often skipped, so a third of your training lives in the weakest slot |
| you can hold it in your head, which is why you will still be running it in three months |
It suits people who train four to six times a week, reliably, and who want structure they do not have to think about. It suits people who like a session to have a theme. And it suits anyone who has struggled to stick to something more complicated, because simple beats optimal when optimal does not get done.
It suits you less if you train two or three times a week: a split that hits each muscle once a week leaves progress on the table where an upper/lower or a full-body structure would hit it twice. A 2016 meta-analysis on training frequency is where that twice-a-week advice comes from. It suits you less if your week is unpredictable, because the cycle only works when the days keep coming.
Fitener does not start from a named split. It builds the week from how often you can train and from which muscle groups have recovered, which is why two people with the same number of days can get different structures. If the result looks like push pull legs, that is because the arithmetic landed there, not because the split was the starting point.
Most people asking about splits are asking what to do on which day. That sits downstream of two things that matter more: how many days you will train, and how much work each muscle gets across the week. Get those right and several splits work. Get them wrong and no split saves it.
It works, but it is rarely the best first choice. Somebody training three times a week usually does better with full-body sessions, which hit each muscle three times instead of once and give more practice at each movement.
Three at minimum, six to run it twice. Four or five days means running the cycle continuously rather than on fixed weekdays, which is also the version that survives a disrupted week best.
Yes, and it is a reasonable structure. Be aware that it trains each muscle once every seven days, which is on the low side for building muscle if you are past the early stage.
Whatever puts the session you care most about on the day you have most energy. No order is meaningfully better for everyone; some fit your week better than others.
Not as a starting point. It builds from your available days and from what has recovered, so the shape follows your week rather than the other way round.
The calculators behind this: TDEE calculator
More reading: progressive overload · all posts
Fitener runs these rules on the data you log, so the targets move when you do, and it puts what you ate next to them. One app for the training and the eating.