Spend 5 to 10 minutes getting warm with easy cardio and a few dynamic moves, then do three or four progressively heavier warm-up sets of your first lift, finishing with a short set at about 80% of your working weight. In a meta-analysis of 32 studies, warming up improved performance in 79% of the measures tested. You don't need long stretches, lots of foam rolling or very heavy sets near your max.
The short answer: get warm, then ramp up
A lifting warm-up has two jobs. It raises your body temperature, and it lets you rehearse the exact lift you're about to do with lighter weights. In practice that comes down to three steps:
- A general warm-up. 5 to 10 minutes of easy cardio and dynamic movement for the joints you'll train.
- Ramp-up sets. Three or four sets of your first lift, adding weight each time and doing fewer reps as it gets heavier.
- A short, heavier last step. A few reps at about 80% of your working weight, then your first working set.
That structure is coaching practice built from the studies below. No single trial has tested it as a complete routine.
Does warming up actually make you lift better?
Usually, yes. A 2010 meta-analysis by Fradkin and colleagues pooled 32 studies, all rated high quality, on warm-ups that included more than just stretching.1 Warming up improved performance in 79% of the measures tested, and there was little sign that it did harm. The authors noted that few of the studies were well-run randomized trials. The review also looked at physical performance in general, not lifting specifically.
Part of the reason is temperature. A 2025 meta-analysis of 33 studies with 921 people found that warmer muscles produced force faster and more powerfully, by about 3.7% per degree Celsius in voluntary contractions.2 Maximum force didn't change. So heat seems to help most with speed and power, and less with the most force you can produce.
Results for maximal strength are mixed. In a small 2011 study, 13 trained people tested their leg press one-rep max twice.3 Once they did warm-up sets alone (8 reps at about 50% of their estimated max, then 3 reps at about 70%). Once they did 20 minutes of easy cycling first, then the same sets. With the cycling added, their max was 8.4% higher on average. That's one exercise in a small group, and 20 minutes is more than most people spend.
For the upper body, a 2015 systematic review of 31 randomized trials found strong evidence that warm-ups with heavy, dynamic efforts improve strength and power.4
What should a warm-up before lifting include?
In 2026, 23 experts from 12 countries went through a formal consensus process to agree on what a warm-up is and how it's built.5 They settled on three layers: general exercises, specific exercises, and what they call conditioning activities, meaning efforts intense enough to boost the performance that follows. The panel also agreed that more complete warm-ups tend to work better. This is expert agreement, not a trial result, and it was written for athletes in all sports. For lifting, the three layers map neatly onto easy cardio, dynamic moves and lighter sets, and a final heavier warm-up set.
Public health guidance says something similar. NHS inform, the NHS 24 health information site for Scotland, suggests a warm-up of around 10 to 15 minutes that raises your heart rate, adds dynamic stretching once you're warm, and includes movements specific to your activity.6
How many warm-up sets do you need?
Enough to finish with a set that feels genuinely heavy but stays short. Three studies of trained men point the same way:
- Light sets alone aren't enough. Forty men did 3 sets of 6 squats and bench presses at 80% of their max after one of three warm-ups.7 A single set of 6 reps at 40% of the training weight was the weakest option. Warm-ups that included a set at 80% of the training weight gave faster squat reps and more total work on the bench press.
- Heavier and shorter beat lighter and longer. Fifteen men did bench press, incline leg press and lat pulldowns, 3 sets to failure each.8 Warming up with 5 reps at 80% of their 10-rep max led to more total training volume than 10 reps at 60% or 15 reps at 40%.
- Going near your max isn't needed. Fourteen men did several sets of squats to failure.9 A heavy triple at 90% of their max didn't produce more total reps or volume than a usual warm-up of 8 reps at 45%, though it gave a small edge on the first set.
Each study was small, tested young trained men and measured a single session, so treat them as clues rather than rules.
A ramp-up for a 100 kg / 225 lb working weight
Here's how that looks for a working weight of 100 kg or 225 lb, say for sets of 5 to 8. The table is coaching practice, not a tested protocol. The heavier final step follows the studies above, which used 5 or 6 reps at around 80%.
| Set | % of working weight | kg | lb | Reps |
|---|---|---|---|---|
| 1 | Empty bar | 20 | 45 | 8 to 10 |
| 2 | About 40% | 40 | 95 | 5 |
| 3 | About 60% | 60 | 135 | 3 |
| 4 | About 80% | 80 | 185 | 3 to 5 |
| Working sets | 100% | 100 | 225 | As planned |
A few practical notes, also coaching practice:
- Keep rests between warm-up sets short, about a minute, with a little longer before your first working set. For working-set rests, see How long should you rest between sets?
- Lighter lifts need fewer steps. If your working weight is around 40 kg or 95 lb, the empty bar and one in-between set are usually plenty.
- Later exercises need less. Once you're warm, one lighter set is usually enough before each new heavy movement, and small exercises like curls may need none.
Rep Labs plans warm-up sets along with your reps and weight, which it sets from your training history, so the ramp is worked out for you.
A warm-up routine you can follow
This combines the findings above into one routine. It's coaching practice, so adjust it to the day's main lift.
- Minutes 0 to 5: easy cardio. Bike, rower or a brisk incline walk at a pace where you could still chat. Go a little longer if the gym is cold or you feel stiff.
- Minutes 5 to 8: dynamic moves for the day's joints. For a lower-body day, try bodyweight squats, walking lunges, leg swings and hip hinges. For an upper-body day, try arm circles, band pull-aparts, push-ups and light rows. Do 8 to 10 easy reps of each.
- Optional: one tight spot. If something limits your position, foam roll it or hold a stretch for under 60 seconds, then do a few dynamic reps.
- Ramp-up sets of your first lift, following the table above.
- One lighter set before each later heavy exercise.
Should you stretch or foam roll before lifting?
You can, briefly, but neither should replace warm-up sets.
Stretching: a 2016 review found that static holds done right before activity lowered performance by 1.1% on average when held under 60 seconds per muscle, and by 4.6% when held 60 seconds or longer.10 Dynamic stretching gave small gains. In the studies that added dynamic activity after static stretching, there was no clear effect on performance. So keep any holds short and follow them with movement.
Foam rolling: a 2019 meta-analysis pooled 14 studies of rolling before exercise.11 It brought small improvements in sprint times (0.7%) and flexibility (4.0%), with negligible effects on jumping and strength. The authors judged the effects minor overall. Roll a tight spot if it helps you move better, but don't count on it for strength.
Does warming up prevent injuries in the gym?
The evidence is thinner than most people assume. The 2026 consensus found no support for the idea that a warm-up protects you from injury in that session.5 The experts did agree that some exercises included in a warm-up may lower injury risk over the long term, just as they would at any other point in your training. The 2015 upper-body review found no trials on injury at all.4
So the strongest reason to warm up is that you'll lift better, not that it's proven to keep you safe that day. For the sports trials on warm-ups, stretching and injury, see Does stretching prevent injuries?
Does music help your warm-up?
It may give you a small boost. A 2020 meta-analysis of 139 studies with 3,599 people looked at listening to music during exercise and sport.12 Music was linked to better mood, slightly better physical performance and a lower sense of effort, and faster songs helped performance more than slower ones. The effects were small to moderate, and the studies covered all kinds of exercise, not warm-ups in particular.
One small study did test warm-up music directly. Ten trained men did a standard bench press warm-up while listening to either music they liked or music they didn't.13 After their preferred music, they did more reps to failure at 75% of their max and reported more motivation, though bar speed didn't change. With 10 people, that's a hint, not proof.
Questions people also ask
How long should a warm-up take before lifting?
Around 10 to 15 minutes in total is a sensible target, in line with NHS inform's general warm-up guidance. That covers a few minutes of easy cardio, some dynamic movement and your ramp-up sets. Take a little longer on cold days or before your heaviest sessions.
Can you skip the cardio and just do warm-up sets?
If you're short on time, the warm-up sets are the part to keep. A general warm-up may still add something, though. In a small study of 13 trained people, adding 20 minutes of easy cycling before the same warm-up sets raised leg press one-rep max by 8.4% on average. A few minutes on a bike or rower is a reasonable middle ground.
Should warm-up sets make you tired?
No. Cut the reps as the weight climbs so you finish the ramp feeling ready rather than fatigued. In a study of 15 trained men, a 5-rep warm-up at 80% of their 10-rep max led to more total work in the session than lighter warm-ups of 10 or 15 reps.
Is static stretching before lifting bad?
Short holds are fine. In a 2016 review, stretches held under 60 seconds per muscle right before activity lowered performance by about 1% on average, while holds of 60 seconds or more lowered it by about 4.6%. If you stretch, keep it brief and follow it with dynamic movement and your warm-up sets.
Sources
- Fradkin AJ, Zazryn TR, Smoliga JM. (2010). Effects of warming-up on physical performance: a systematic review with meta-analysis. J Strength Cond Res 24(1):140-148.
- Wilson CJ, Nunes JP, Blazevich AJ. (2025). The effect of muscle warm-up on voluntary and evoked force-time parameters: a systematic review and meta-analysis with meta-regression. J Sport Health Sci 14:101024.
- Abad CC, Prado ML, Ugrinowitsch C, Tricoli V, Barroso R. (2011). Combination of general and specific warm-ups improves leg-press one repetition maximum compared with specific warm-up in trained individuals. J Strength Cond Res 25(8):2242-2245.
- McCrary JM, Ackermann BJ, Halaki M. (2015). A systematic review of the effects of upper body warm-up on performance and injury. Br J Sports Med 49(14):935-942.
- Boullosa D, Gil-Calvo M, Xenofondos A, et al. (2026). International expert consensus on warm-up protocols for athletes: a Delphi study. Int J Sports Physiol Perform 21(9):982-995.
- NHS inform (NHS 24 MSK Clinical Advisory Group) (2026). How to reduce your risk of injury from exercise or physical activity. NHS inform (Scotland).
- Ribeiro B, Pereira A, Neves PP, et al. (2020). The role of specific warm-up during bench press and squat exercises: a novel approach. Int J Environ Res Public Health 17(18):6882.
- Viveiros L, Gioia K, Nasser I, et al. (2024). High-load and low-volume warm-up increases performance in a resistance training session. J Bodyw Mov Ther 40:1487-1491.
- Souza D, Silva AG, Vale A, et al. (2024). Effect of warm-up protocols using lower and higher loads on multiple-set back squat volume-load. PeerJ 12:e17347.
- Behm DG, Blazevich AJ, Kay AD, McHugh M. (2016). Acute effects of muscle stretching on physical performance, range of motion, and injury incidence in healthy active individuals: a systematic review. Appl Physiol Nutr Metab 41(1):1-11.
- Wiewelhove T, Döweling A, Schneider C, et al. (2019). A meta-analysis of the effects of foam rolling on performance and recovery. Front Physiol 10:376.
- Terry PC, Karageorghis CI, Curran ML, Martin OV, Parsons-Smith RL. (2020). Effects of music in exercise and sport: a meta-analytic review. Psychol Bull 146(2):91-117.
- Ballmann CG, Cook GD, Hester ZT, et al. (2020). Effects of preferred and non-preferred warm-up music on resistance exercise performance. J Funct Morphol Kinesiol 6(1):3.