Warm-Up Sets Before Lifting: How to Prepare Without Fatigue
Published by Liftlog+ · Updated
Warm-up sets are easy rehearsals before your working sets. Start with a load you can control comfortably, approach the planned working weight in manageable steps, and do fewer repetitions as the load rises. The aim is to arrive ready for the first work set—not to complete another workout before it.
There is no single number of warm-up sets that fits every lift. A light exercise later in a session may need only a brief rehearsal; a heavier first lift may need several steps. Use the load, movement and how those rehearsals feel to decide, rather than copying a fixed percentage ladder.
This guide is for generally healthy adults who already have a lifting plan and know the exercises they intend to use. It is not a maximum-strength testing protocol or advice for training through an injury. If you need a complete routine first, start with the three-day full-body beginner plan.
Warm-up sets versus working sets
A working set is one of your program’s planned challenging sets. A warm-up set prepares you for that work: you check the setup, rehearse the movement and become familiar with the load without approaching your limit.
Keep easy warm-ups separate from the working-set target. If your plan calls for two work sets, doing three warm-up sets does not turn that into five completed work sets. Equally, a tiring set does not become cost-free just because you label it “warm-up.”
For effort, “easy, several good reps left” is sufficient. You do not need a precise RPE number for every rehearsal. The RPE and RIR guide explains why effort estimates are not exact measurements, especially far from failure.
A simple warm-up decision process
The following is a practical starting approach, not a research-validated sequence for every person:
- Begin with a few minutes of comfortable movement. Easy walking or cycling can help you transition into the session. Keep it easy enough that you are not arriving at the weights tired or breathless. This does not replace practicing the lift itself.
- Check the equipment and rehearse the actual movement. Use a very light load you can control. Confirm your bench or rack setup, grip, stance and comfortable range of motion before adding weight. Ask gym staff or a qualified coach about unfamiliar equipment.
- Add a step only when it serves a purpose. A large gap between the first rehearsal and the working weight is a reason for an intermediate load. As the weight rises, reduce repetitions rather than repeating a full work-set rep count at every step.
- Rest, then assess readiness. You should be able to repeat the intended movement without rushing, grinding or changing technique. If the next load feels unexpectedly difficult, rest longer, reduce the planned work weight or stop and reassess—not automatically add more warm-up volume.
An empty bar is an option, not a universal starting weight. If it is already demanding, use a lighter training bar or get help choosing a manageable setup. Do not load a barbell just because an example begins there.
Two worked warm-up examples
These examples show how to organize a ramp, not how much you should lift. They assume the work weight is already familiar and suitable for your existing plan. The kilogram and pound columns are separate equipment examples, not exact conversions; follow one column, not both.
Example 1: a heavier first exercise
Suppose your plan includes the barbell back squat, with a familiar working load of 60 kg total or 135 lb total for six reps. All loads below include the bar. Use a rack with correctly positioned safeties and learn the setup before loading it.
| Stage | Metric example | Pound example | Repetitions |
|---|---|---|---|
| Easy rehearsal | 20 kg total | 45 lb total | 6 |
| Intermediate step | 35 kg total | 75 lb total | 4 |
| Final approach | 50 kg total | 115 lb total | 2 |
| First working set | 60 kg total | 135 lb total | Your planned 6, within the plan’s effort target |
The falling rep count lets you experience the heavier loads without doing six repetitions at every weight. This is one possible ramp, not evidence that everyone needs exactly three warm-up sets. If the first load is not easy, this example is not appropriate for you. If the jump between two loads is too large to manage confidently, choose smaller steps rather than forcing it.
Example 2: a lighter dumbbell exercise
Suppose your plan uses the flat dumbbell bench press, with palms facing forward and a familiar working weight of 10 kg per hand or 20 lb per hand for 8–12 reps. Know how to get the weights into and out of position; do not depend on dropping them.
| Stage | Metric example, per hand | Pound example, per hand | Repetitions |
|---|---|---|---|
| Easy rehearsal | 4 kg | 10 lb | 6 |
| Optional intermediate step | 7 kg | 15 lb | 3 |
| First working set | 10 kg | 20 lb | Your planned 8–12, within the plan’s effort target |
The intermediate step is useful if the change in load or setup needs another rehearsal. It is not compulsory if you are already comfortable and the next step is manageable. Use available lighter pairs rather than treating these numbers as required dumbbell sizes. Do not add hard sets to compensate for missing an exact example weight.
Neither example asks you to test a one-repetition maximum or warm up with a load above your planned work weight.
How long should you rest between warm-up sets?
Do not turn the ramp into a race. After an easy rehearsal, the time needed to change weights and recover comfortable breathing may be enough. As the load approaches your work weight, allow more recovery.
For the squat example, a practical starting point is about 30–60 seconds after the first easy set, 1–2 minutes after the intermediate set, and 2–3 minutes before the first work set. These are editorial timing examples, not proven optimal intervals. Take longer if breathing, setup or readiness calls for it; do not start because a timer has expired.
Once the working sets begin, follow your plan’s rest guidance. The rest-between-sets guide covers that separate decision.
Do you need to warm up again for every exercise?
Reassess each new movement, but do not automatically repeat the entire first-lift ramp. Being generally warm does not tell you whether a different exercise’s setup or load is familiar today.
| Situation | Practical decision |
|---|---|
| First loaded exercise of the day | Start easy and build toward its working weight |
| A different movement or body region | Use an easy exercise-specific rehearsal, then add steps if needed |
| A familiar later exercise with a light working load | A short rehearsal may be enough; avoid adding sets just to reach a quota |
| A long interruption, changed equipment or unfamiliar setup | Recheck with a light load rather than resuming the old number automatically |
Research supports a more nuanced answer than “always” or “never.” In a 2025 crossover study of 22 recreationally trained men, re-warming up before squats performed after bench presses improved several squat velocity and power measures. Re-warming up before bench presses after squats did not clearly improve the same velocity and power outcomes, although some other measures differed.
The study used Smith-machine exercises under supervision, not the free-weight examples above. It does not establish an exact warm-up count for every exercise, nor prove that preparation for later upper-body work is unnecessary.
Should your last warm-up be very heavy?
Not by default. Some performance protocols use a heavy preliminary effort in an attempt to improve what follows. That is a different decision from learning a manageable ramp before ordinary work sets.
A 2024 study of 14 trained men compared a usual warm-up with additional high- or low-load preparatory work before three Smith-machine squat sets. It found no statistically significant difference in total repetitions or total volume-load across those sets. The heavier condition did improve first-set volume-load, and the small study had limited statistical power—so it does not prove such methods never help.
For this guide, keep the warm-up below your planned working weight and comfortably short of failure. That is a conservative programming choice, not a claim that heavy preparation is ineffective for every athlete. Do not copy a near-maximal research protocol simply to make a routine session feel more advanced.
What if the warm-up feels wrong?
- The load feels heavier than expected: rest and check the setup. If it remains difficult, reduce the work weight or shorten the session rather than forcing yesterday’s numbers.
- The movement is unfamiliar: get instruction. More repetitions do not replace learning how to set up and finish safely.
- You feel tired before the work sets: the preparation may have become too demanding. Do not keep adding reps in search of a feeling of readiness. Recover and reconsider the session; next time, review the warm-up loads, reps and rest.
- You feel pain, dizziness or otherwise unwell: stop. Do not use repeated warm-up attempts to push through symptoms. Persistent or concerning symptoms need appropriate professional assessment.
Warming up is not an injury guarantee. A systematic review of upper-body warm-ups found performance benefits for some protocols but found no included studies testing upper-body injury-prevention outcomes. That is an evidence gap, not proof that warm-ups either prevent every injury or have no safety value.
Log enough to repeat what worked
Keep a short warm-up note separate from work sets. For the metric squat example:
Warm-up: 20 kg × 6, 35 kg × 4, 50 kg × 2. All loads include bar; easy, controlled. Rested 3 minutes before work. First work set: 60 kg × 6, effort recorded separately.
If you later need an extra step or longer rest, note the change. You do not need to chase a warm-up personal best or count easy preparation toward the plan’s challenging-set target. The workout log template provides separate rows if you want to record every set.
The useful endpoint is simple: the setup is familiar, the movement is controlled, and you are ready to attempt the planned work without having exhausted yourself getting there.
Sources and scope
- McCrary, Ackermann and Halaki, 2015: A systematic review of the effects of upper body warm-up on performance and injury. DOI: 10.1136/bjsports-2014-094228. Abstract consulted; 31 studies with varied protocols and performance outcomes. No included injury-prevention studies; this is not evidence for a universal ramp.
- Souza and colleagues, 2024: Effect of warm-up protocols using lower and higher loads on multiple-set back squat volume-load. DOI: 10.7717/peerj.17347. Full-text methods, results, discussion and limitations consulted. Small, trained male sample; Smith-machine squats to failure, not a trial of this article’s examples.
- Neves and colleagues, 2025: Impact of Re-Warm-Up During Resistance Training: Analysis of Mechanical and Physiological Variables. DOI: 10.3390/sports13050142. Full-text methods, results, discussion and limitations consulted. Acute, supervised Smith-machine study; does not establish long-term growth or injury reduction.
The ramps, rest examples and decision checklist are practical editorial choices informed by these sources, not individualized coaching or a clinically validated protocol.
For general information only—not personalized training or medical advice. Historical routines may vary by source; adapt workouts to your experience and consult a qualified professional if needed.
