A simple, evidence-based warm-up for lifting: what the research says about general warm-ups, stretching, and warm-up sets, plus a ramp-up table you can copy.
To warm up before lifting, do 5 minutes of easy movement, then 2 to 4 ramp-up sets of your first exercise, building from about 40-50% to 80-90% of your working weight with falling reps. Skip long static stretches before heavy sets: holds of 60 seconds or more per muscle were linked to bigger short-term performance drops in a 2016 review. The exercise-specific warm-up sets matter most.
Most lifters either skip the warm-up entirely or spend 20 minutes foam rolling and stretching before touching a bar. Neither is ideal. A good lifting warm-up takes about 10 minutes, and most of it happens with the bar in your hands.
Here is what the research says, and a routine you can use for any session.
Yes, for most sessions, though the research is more mixed than gym folklore suggests. A 2010 systematic review and meta-analysis by Fradkin, Zazryn, and Smoliga found that warming up improved performance in 79% of the criteria examined across 32 high-quality studies, with little evidence that warming up was harmful.
For lifting specifically, the picture is less dramatic. A 2014 crossover study by Ribeiro and colleagues had 15 men perform 4 sets to failure on bench press, squat, and arm curl at 80% of 1RM after no warm-up, a specific warm-up, an aerobic warm-up, or both. The total reps were not significantly different between conditions.
So why bother? Because the warm-up sets also do jobs a single study cannot measure: practising the movement before it is heavy, checking how your joints feel today, and making sure your first working set is not your first rep.
A lifting warm-up needs two parts: a short general warm-up and specific warm-up sets. A 2021 narrative review on time-efficient training by Iversen, Norum, Schoenfeld, and Fimland recommended keeping the warm-up exercise-specific, and only prioritising stretching if your goal is flexibility.
Do 2 to 4 warm-up sets, more as the working weight gets heavier. The goal is to reach your working weight feeling ready, not tired.
Here is a ramp-up for a squat with a working weight of 225 lb for 3 sets of 6:
| Set | Weight | Approx. % of working weight | Reps |
|---|---|---|---|
| 1 | Empty bar (45 lb) | 20% | 8 to 10 |
| 2 | 95 lb | 40% | 5 |
| 3 | 135 lb | 60% | 3 |
| 4 | 185 lb | 80% | 2 |
| Working sets | 225 lb | 100% | 3 × 6 |
Notice the reps drop as the weight climbs. Warm-up sets should feel easy, nowhere near failure. Rest about 60 seconds between early warm-up sets and closer to 2 minutes before your first working set.
Your second and later exercises usually need only one or two lighter sets, because your body is already warm. If the next lift uses the same muscles, like a Romanian deadlift after squats, one set at about 60% is often enough.
Short stretches are fine, long static holds are best saved for later. A 2016 systematic review by Behm, Blazevich, Kay, and McHugh found static stretching caused an average performance drop of about 3.7% when testing came straight after, with larger deficits at 60 seconds or more per muscle (about 4.6%) than under 60 seconds (about 1.1%). Dynamic stretching produced small improvements when done within minutes of activity.
The same review noted that when dynamic activity followed stretching, no clear performance effect was seen. In practice:
Five to 15 minutes is enough for most sessions. A heavy squat or deadlift day might need closer to 15 minutes because of the extra ramp-up sets. An arm or machine-based day might need 5. If your warm-up regularly runs past 20 minutes, cut the general part, not the ramp-up sets.
The biggest warm-up mistakes are making warm-up sets too hard and jumping too quickly to your working weight.
Warm-up first, then working sets with full rest. A warm-up does not replace rest between hard sets: 2 to 3 minutes on compound lifts is a good default, as covered in our guide to rest between sets. If you are still choosing a program to warm up for, start with our beginner workout split guide.
Alexandros is a personal lifting coach you talk to in a chat, currently in early access. You describe your session in plain English, including warm-ups, like "squat: warmed up to 185, then 225 for 3 × 6, last set hard." It logs every set and rates effort, and its recommendations for next time come from your working sets using double progression. Ask "How has my squat progressed?" for a chart of top weight, estimated 1RM, or volume.
A few minutes of easy cardio is a fine start, but it is not enough on its own. Follow it with ramp-up sets of your first exercise.
No. Only count sets that are hard, roughly within 1 to 4 reps of failure. Easy warm-up sets prepare you but are not a meaningful growth stimulus.
You can if it helps you feel ready, but keep it brief. A couple of minutes is plenty, and it should not replace ramp-up sets.
Do one or two lighter sets at about 50% and 75% of your working weight for 6 to 10 easy reps. Machines and dumbbells usually need fewer warm-up sets than heavy barbell lifts.
Keep at least one or two ramp-up sets of your first exercise. Skip the general warm-up and stretching first.
