Warm-Up Sets for Lifting: How to Ramp Up Weight Without Wasting Energy

Most lifters need 2-4 warm-up sets before their first heavy exercise: the empty bar, then roughly 50%, 70% and 85% of the working weight, with reps dropping from about 10 down to 1. The goal is to practise the movement and load it gradually, not to do any real work. If a warm-up set leaves you breathing hard, it was a working set in disguise.

This is the simple warm-up sets protocol for lifting that I wish every gym had on the wall. It sits inside our complete guide to load, rep ranges, RIR and rest intervals, and it focuses only on barbell and dumbbell ramping. For the general joint-prep side, see our 7-minute dynamic warm-up.

What a warm-up set is actually for

A warm-up has a few jobs, and they are not equally well proven.

• Raise temperature and blood flow. Warm muscle tends to work better. This is the classic reason.
• Practise the pattern. Your first rep of the day is clumsier than your fifth. Lighter sets let you groove bar path, bracing and depth before the load matters.
• Prime the nervous system. Heavier, low-rep sets are thought to improve readiness to produce force. The evidence for this is mixed, as you will see below.
• Check how you feel. If 70% feels like 85% today, that is useful information before you commit to heavy work.

You may also hear that warm-ups “lubricate your joints with synovial fluid.” It is a popular line, but I could not find a trial in lifters that measured it, so treat it as a plausible idea rather than a proven mechanism.

A systematic review of 32 high-quality studies found that warm-up improved performance in 79% of the outcomes examined, and found little evidence that warming up hurts. The authors also noted that few randomized controlled trials existed, so the picture is not as tidy as it sounds (Fradkin et al., 2010). That review included many activity types, not only lifting.

What is the best warm-up for heavy working sets?

Here is a ramp that works for most people. The numbers are illustrative, a starting template and not a studied formula.

Say your working weight on squat is 100 kg for 5 reps:

Set	Load	Reps	Rest
1	Empty bar (20 kg)	10	30 s
2	50 kg (about 50%)	5	45 s
3	70 kg (about 70%)	3	60 s
4	85 kg (about 85%)	1	90 s
5 (optional)	93 kg (about 93%)	1	2 min
Working sets	100 kg	5	2-3 min

Three principles sit behind this table.

1. Load goes up, reps come down. Ten reps with the bar is a movement rehearsal. One rep at 85% is a heavy feel without any fatigue to speak of.
2. Jumps shrink as you get closer. Going from 50 kg to 100 kg is a big leap. Going from 85 kg to 93 kg is a nudge. Small final jumps are easier to control.
3. Rest enough that the last set is fresh. Quick sets early, a bit longer later. If you are rushing the 85% single, you are rehearsing sloppy reps.

Do the single only if you want it. It is not magic, and plenty of people do fine skipping it.

Why smaller jumps may help

A small 2024 study in nine male college weightlifters compared warm-up ramps before a heavy snatch at 85% of max. A slow progression in 10% steps (50, 60, 70, 80% of 1RM) produced higher peak vertical ground reaction force in the second pull than a 15% step ramp or a self-selected warm-up, and the authors concluded the slower progression was preferable for power output (Yang et al., 2024).

It is a very small sample of Olympic-style lifters on a technical lift, so do not transfer it directly to a bench press session. Still, it fits the common coaching intuition: bigger jumps close to the working weight leave less room to find your rhythm.

Do warm-up sets steal energy from your working sets?

This is the fear that makes people skip warm-ups or rush them. The research on repetition performance is reassuring, with a caveat about how you build the ramp.

In a crossover trial of 15 resistance-trained men, three sessions used different warm-ups before three exercises (bench press, inclined leg press, lat pulldown): 40% of 10RM for 15 reps, 60% for 10 reps, or 80% for 5 reps. The 80% warm-up produced significantly more total training volume than the 60% and 40% ones, and the authors recommended warming up each exercise at 80% of the initial workout load (Viveiros et al., 2024). So the heavier, lower-rep warm-up did better. Five reps at 80% of a 10RM is still well short of failure, so it was heavier without being hard.

Now the conflicting piece. Another crossover study in 15 trained men used four sets of bench, squat and curl to failure at 80% of 1RM after a control, specific, aerobic or combined warm-up. Sum of reps and fatigue index did not differ between conditions, so warm-up did not influence performance (Ribeiro et al., 2014).

Why the difference? Possibly the loading: one study compared different warm-up loads before a session, the other compared types of warm-up against a control, in different exercises and testing protocols. Both used small samples of men, and neither shows that warm-up sets harm your working sets. The cautious takeaway is that a short, heavier-feeling ramp is a safe default, and an extra-long warm-up is probably not buying you reps.

Is a heavy “potentiation” single worth it?

This is where lifters get fancy. The idea, called post-activation performance enhancement, is that a heavy or explosive conditioning set leaves you temporarily stronger or more explosive. If you want more background, see our piece on post-activation performance potentiation.

The results are mixed:

• In 14 trained men, a heavy triple at 90% 1RM or six fast reps at 45% did not improve total reps or total volume load for multiple squat sets to failure versus a usual warm-up. Only the first set’s volume load was higher after the heavy triple (Souza et al., 2024).
• In three crossover trials on jump height, potentiation protocols did not improve jumping beyond what a general and specific warm-up did, and the authors suggested PAPE may largely be a warm-up effect (Rappelt et al., 2024).
• In 18 resistance-trained male students, a ballistic warm-up led to higher barbell velocity around the bench press sticking region than the other two strategies tested (dynamic stretching and a high-resistance option) (Hedayati and van den Tillaar, 2025). That is a one-off bench press result in young men.

Putting them together, there might be a small benefit for a one-rep max attempt or a power lift, and little benefit for hypertrophy sets taken to failure. If you want to try it, keep it to a single rep at 90-93%, then rest a couple of minutes.

How many warm-up sets for each exercise?

Not every exercise needs a full ramp. Your first heavy compound does the general warming, so later lifts for the same muscles need less.

A typical push day looks like this:

• Incline dumbbell press (first lift, heavy-ish): 3 ramp sets.
• Shoulder press (same muscles, already warm): 1 lighter set.
• Lateral raises: often zero, or one set of 12 with half the working weight.
• Triceps pushdown: zero.

If you are doing bench press with straight bar loading, our barbell plate calculator helps you plan the plates for each jump so you are not doing mental math between sets.

How to pick warm-up weights from your working weight

Use percentages of the weight you plan to lift today, not your all-time max. A 5-rep working set at 100 kg means 50 kg, 70 kg and 85 kg. A 12-rep set at 60 kg is lighter overall, so you might only need the bar for 10, then 40 kg for 4 or 5.

If you are building your ramp from a max, the 1RM calculator can estimate your top load. For hypertrophy sets taken close to failure, the logic is the same, and our guide to rest intervals for muscle growth explains how long to rest before the first working set.

One more detail from velocity-based training: a study in 20 trained people found that using warm-up sets at 50%, 70% and 90% of estimated 1RM gave near-perfect correlations with measured 1RM, and that an extra warm-up set only slightly improved accuracy (Perez et al., 2021). That study was about predicting a bench press max from bar speed, not about fatigue. Still, it fits the idea that 3 well-spaced sets give you a fair read on how heavy the day will feel, and extra jumps add little.

Common mistakes with warm-up sets

• Too many reps at high load. If it takes 8 reps to reach 80%, you are doing real work.
• Jumping from the bar to 90%. Your first heavy set will feel awful.
• Warming up the wrong thing. Foam rolling and a long treadmill session do not replace a few specific sets of the lift.
• Skipping the warm-up on light days. You still need at least one practice set.
• Chasing a feeling. If a heavy single feels sluggish, do not add more singles. Move on.

When warm-up is not the problem

Stiffness that fades after a few light sets is normal. Pain is different. Sharp, one-sided, worsening or pinching pain, swelling, numbness, or a joint that catches or gives way is not something you warm up through. See a doctor or physiotherapist if this is happening. No ramp protocol replaces a proper assessment, and this article is general education, not medical advice.

If you do not have a program to attach these sets to, our free training plans show where warm-up sets fit into a full session.

The simple version

1. Start with a few minutes of general movement.
2. On the first heavy exercise, do the bar for about 10, then roughly 50% for 5, 70% for 3 and 85% for 1.
3. Add a single at about 93% only if you want it.
4. Rest a little longer as the weight rises, then start your working sets.
5. On later exercises for the same muscles, do one practice set or none.

That is the whole protocol. It is dull, and that is the point.