Progressive overload

What progression means

Progressive overload doesn't mean "heavier every workout". It means gradually increasing the work a muscle does: more weight, more reps with the same weight, more sets, sometimes more range or less rest. What matters is that a month from now you're doing more than today — and can show it in numbers.

At the start, progression almost happens on its own: a beginner adds weight to the squat every week. After six months to a year the steps get smaller and rarer — and that's when, without a plan, you stall. A plan's job is to find where you can still add when adding weight every week no longer works.

One more thing: progress only counts on the same exercise with the same technique. If you started squatting higher and the weight went up, that's not progress — it's a different exercise.

Weight or reps

The most common levers are weight and reps. Which is better? In the Plotkin et al. (2022) study, trained people progressed for eight weeks in different ways: some added weight at constant reps, others added reps at a constant weight. Both groups grew the same amount of muscle, and the weight group had a small edge in squat strength — barely meaningful in practice.

The takeaway is simple: both work, so pick what's convenient. For strength work in 3–6 reps, adding weight makes more sense. For isolation and exercises where weight jumps in big steps (dumbbells in 2 kg steps, a machine in 5 kg plates) — reps. Best of all is combining them.

Double progression — the default scheme

Double progression combines both levers. An exercise has a rep range, say 8–12. You work with one weight and add reps until every working set reaches the top of the range. Then you add weight and start again from the bottom.

An example on the seated dumbbell press, 3×8–12:

• Week 1: 20 kg — 10, 9, 8.
• Week 2: 20 kg — 11, 10, 9.
• Week 3: 20 kg — 12, 11, 10.
• Week 4: 20 kg — 12, 12, 12. Top of the range.
• Week 5: 22 kg — 9, 8, 8. Back to the bottom.

That way progress shows every week, even when the weight goes up once a month. My diary suggests your target for a set exactly like this: a 5–12 rep range or whatever the program's scheme says, one more rep, and at the top, one weight step. More in the glossary: double progression.

How much to add

Less than you'd like. A 10 kg jump breaks your reps and technique and then sets you back. Working steps:

• Barbell compounds — 2.5 kg (1.25 a side). On very heavy weights, from 200 kg, 5 kg makes more sense: 2.5 there is under a percent, which is noise.
• Dumbbells — the next pair on the rack. If 2 kg a hand is too big a jump, build reps first.
• Machines — one plate, and if that's too heavy, reps.
• Overhead press and isolation grow slower than everything else and often need small plates of 0.5–1.25 kg.

No small plates at your gym? Add reps and sets, and add weight once you've built a buffer. Your estimated max will show you're growing even if the number on the bar is the same for now: the 1RM calculator works it out, and so does my diary after every workout.

How hard to train

Progression doesn't mean taking every set to failure. In the Refalo et al. (2023) meta-analysis, training to failure showed no clear muscle-growth advantage over sets stopped a little short. Failure brings a lot of fatigue — both your next set and your next workout get worse.

The working zone is 1–3 reps in reserve (RPE 7–9). That's hard enough to grow and leaves something for next time's progression. If you're not sure how many you had left, take the last set of an isolation exercise to failure every few weeks — it calibrates the feeling. More on the scales: RPE and RIR.

Sets are a lever too: if you do 2 working sets per muscle per workout and you've stalled, a third will do more than another 2.5 kg. How many sets a week make sense is in the volume guide.

When progress stops

One or two flat workouts aren't a reason to change anything: sleep, food and nerves make numbers wobble. The reason is three or four weeks in a row with neither weight nor reps moving and a flat estimated max. Then, in order:

1. Check sleep, food and frequency — that's where it usually is.
2. Drop the weight by 10% and climb the double-progression ladder again.
3. Change the rep range: from 8–12 to 5–8 or the other way round.
4. Add one or two weekly sets for the lagging muscle.
5. If you're tired overall — a lighter week.

The details, with research, are in the guide on breaking a plateau. My diary doesn't wait for you to notice: if the weight sits still for three workouts at 12+ reps, I remind you to add; if there's no growth for eight weeks, the coach breaks down why.

Read next

• Double progression
• 1RM calculator
• How to break a plateau
• Ready-made programs