How to structure a training block
Six to eight weeks of the same exercises and the same progression rule, then a deload week. Build volume or load gradually across the block, keep everything else fixed so you can tell what worked, then change one thing before the next one.
Why blocks exist
A block is simply a bounded chunk of training — long enough for an adaptation to happen, short enough to review honestly.
Without them, training becomes either an unchanging routine you run for years, or a constant churn of new programmes where nothing gets long enough to prove itself. Blocks solve both. You commit for six to eight weeks, you keep the variables fixed, and at the end you can answer one question: did my working weights go up?
That question is unanswerable if you changed exercises in week three and rep ranges in week five.
How long
| Block length | Suits | Why |
|---|---|---|
| 4 weeks | Advanced lifters running high volume | Fatigue accumulates fast enough that eight weeks is not sustainable. |
| 6–8 weeks | Most people | Long enough for measurable strength change, short enough to stay motivated and to review clearly. |
| 8–12 weeks | Beginners on a first programme | Progress is fast and linear; there is no reason to interrupt it early. |
Add a deload as the final week, or immediately after. Six weeks of work plus one easier week is a clean seven-week cycle.
What to progress across the block
Pick one primary driver and let the rest stay still.
Option A — progress load (most common)
Volume stays constant; weight climbs as you earn it via double progression. Weeks 1–6: 4 sets of 6–8, adding weight whenever you hit 8 on all four sets.
Option B — progress volume
Load stays roughly constant; sets increase. Weeks 1–2: 3 sets. Weeks 3–4: 4 sets. Weeks 5–6: 5 sets. Useful when you are trying to raise your weekly volume without a load jump.
Option C — waves
Three-week waves of rising load and falling reps: 4×8, then 4×6, then 4×4, each heavier. Then repeat the wave slightly heavier. Common in strength-focused blocks and in Powerbuilding.
What not to do: progress load and volume simultaneously across a whole block. It works for about three weeks and then you are simply tired, with no way to tell which variable was responsible.
What to keep fixed
- Exercise selection. Same lifts for the whole block. You cannot compare week six with week one if the exercise changed.
- Rep ranges, unless waves are your chosen progression.
- Rest times. Shortening rest mid-block quietly reduces load and makes the data meaningless.
- Session order and days. Keep the structure recognisable.
This is not dogma about variety. It is about being able to attribute cause. Variety within a block feels productive and destroys your ability to learn anything.
Reviewing a block
At the end, look at your log and ask three questions:
- Did working weights rise on the main lifts? If yes, the block worked — repeat the structure with slightly more volume or load.
- Did they stall from week four onwards? Either volume was too high to recover from, or too low to stimulate. Performance falling suggests too much; performance flat from the start suggests too little.
- Did I actually complete it? If you hit 60% of sessions, the programme was not tested. Fix attendance before changing anything else — see choosing a split that survives your schedule.
What to change between blocks
One thing. Occasionally two. Never everything.
- Volume: add one to two sets per muscle group.
- Rep range: move from 8–10 to 5–6, or the reverse.
- Exercise variation: front squat instead of back squat, incline instead of flat — same pattern, different emphasis.
- Emphasis: more volume for a lagging muscle, maintenance for one that is ahead.
If a block went well, the correct change is often almost nothing. Repeating a productive block with a small volume increase is the least exciting and most effective decision available to you.
The practical version
- 6–8 weeks of work, then a deload week.
- Same exercises and rep ranges throughout, so the result is interpretable.
- Progress one variable — usually load — not several.
- Review by asking whether working weights rose.
- Change one thing for the next block. Repeating a good block is a valid choice.
Key takeaways
- A block is 6-8 weeks of fixed exercises and one progression rule, then a deload.
- Keeping variables fixed is what makes the outcome interpretable.
- Progress load, or volume, or use waves — one of them, not all three.
- Review by asking whether working weights rose on the main lifts.
- Change one thing between blocks. Repeating a productive block is often correct.
Related reading
General information, not medical or individualised advice. Speak to a doctor before starting a new programme, especially if you have a medical condition, are pregnant, or are returning from injury. If you train with a coach, their guidance takes precedence.
Track it, or none of this applies
MyFitsy pre-fills the weight you used last time, so progression is a decision instead of a guess.
