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REPSTAX

Build Muscle

Upper / Lower Split

Four days a week, alternating upper body and lower body, with the two halves of the week taking different angles on the same muscles.

Days a week
4
A session
60 min
Sessions in it
4
Split
Upper / Lower (4×/Week), Double Progression

How it runs

Upper A and Lower A are the heavy days; Upper B and Lower B are the volume days — different lifts, not the same session run with different numbers.

What you actually train

4 sessions, in order. Every movement links to how to do it.

  1. Upper A (Heavy)

    7 movements

  2. Lower A (Squat-Led)

    6 movements

  3. Upper B (Volume)

    8 movements

  4. Lower B (Hip-Led)

    6 movements

Why it works

  • Every muscle group is trained twice a week at eleven to seventeen hard sets, which is the range most people actually grow on.
  • Heavy days build strength at five to eight reps; volume days chase reps at eight to eighteen. They do different jobs and neither replaces the other.
  • Load moves by double progression: work the bottom of the rep range, and add weight only once every set reaches the top of it.
  • Every set carries an effort target, so “hard enough” is a number rather than a feeling.
  • Stalling has a rule — drop that lift ten per cent and build back — so a bad fortnight does not turn into a lost block.

Warm up with two or three ramping sets of the day's first lift. The three days you are not training are part of the programme: easy cardio you could hold a conversation through sits alongside it, interval work and a second lifting programme do not.

What to expect

Expect the heavy days to be the short ones and the volume days to be the ones that leave you breathing hard.

Before you start

Before you start, please read this part. Lifting is among the safest and most useful things most people can do, and there is a short list of exceptions worth checking yourself against first.

If you have a heart or lung condition, chest pain or pressure at rest or on effort, dizziness or blackouts, blood pressure or diabetes that is not currently controlled, a hernia, low bone density or osteoporosis, a joint or back problem that is flaring, or you are pregnant or within a year of giving birth, speak to your GP or a physiotherapist before starting and follow their instruction over anything written here.

Stop the set and get advice for chest pain or tightness, breathlessness out of proportion to the effort, dizziness, or a sudden sharp pain in a joint or the back.

Stop it as well for pain, numbness, pins and needles or weakness that travels down an arm or a leg, and get that seen before you load the pattern again. This programme puts a loaded bar on your back and on your shoulders.

Use a rack with the safety pins set at the depth you squat to, and do not bench alone without them. Nothing here is medical advice.

What you need

  • Barbell
  • Dumbbell
  • Cable Machine
  • Machine
  • Bench
  • Pull-Up Bar
  • Back Extension Bench

Train it, and keep the record

Import the programme, log the sets as you do them, and watch the numbers move week to week. Starter is free, with no card.