How to Warm Up Before Lifting: A Simple 3-Step Plan

Why warm up at all?

A warm muscle contracts faster and more forcefully, joints move more freely and your nervous system gets time to switch on. In the meta-analysis by Fradkin et al. (2010), warming up improved performance in most of the measures studied and almost never made it worse.

In strength training, the warm-up has three practical jobs:

• Prepare the body: temperature and heart rate go up and ranges of motion open.
• Groove the technique: light sets are practice reps for the day's main lift.
• Check in: you notice early if something is stiff or sore and can adjust the session.

To be honest, there is less direct research on warm-ups preventing injuries in the gym than on warm-ups improving performance. Still, a short, sensible warm-up is cheap insurance, and it makes your working sets better.

The three steps of a warm-up

1. General warm-up (5–7 min)

Start with something light that raises your heart rate: the Rowing Machine, Stationary Bike, Jump Rope or a brisk incline walk. The pace is right when you are slightly out of breath but can still talk. The goal is to get warm, not tired.

2. Mobility and activation (3–5 min)

Pick 2–4 dynamic drills that match the day's session. Do 5–10 slow, controlled reps of each through the full range.

• Lower-body day: World's Greatest Stretch, 90/90 Hip Switch, Knee-to-Wall Ankle Mobility and a light Goblet Squat.
• Upper-body day: Band Pull-Apart, Band Shoulder Pass-Through, Cat-Cow and Foam Roller Thoracic Extension.

If one area is always tight for you, spend a couple of extra minutes there. You do not have to do everything every time.

3. Ramp-up sets

This is the most important part. You perform the day's first main lift with lighter loads, raising the weight and dropping the reps as you approach your working weight. Reps go down so you do not tire yourself before the sets that count. A solid default ladder:

empty bar ×10 → 40% ×5 → 60% ×3 → 75% ×2 → 85% ×1

The percentages are of today's working weight, not your one-rep max.

Worked example: a 100 kg squat

Say your program calls for the Back Squat at 3 × 5 with 100 kg.

That is only 21 warm-up reps, with the heaviest ones done as singles. It is enough to prime your nervous system without taking anything away from the working sets.

Lighter weights: round and trim

If your working weight on the Bench Press is 60 kg, the percentages give 24, 36, 45 and 51 kg. Round to what you can load on the bar: 25, 35, 45 and 50 kg. If a percentage would fall below the empty bar, skip that step. A beginner working with 30–40 kg often needs only the empty bar and one in-between set.

What about the next exercises?

After the first main lift you are already warm. The second big lift usually needs only 1–2 ramp-up sets, for example 50% ×5 and 75% ×2. For accessory and isolation work, the first working set often doubles as the warm-up as long as you keep 2–3 reps in reserve (see RIR and RPE Explained: How Hard Should a Set Be?).

A ready-made 12-minute lower-body warm-up

1. 0–6 min: bike or rower at an easy pace, picking it up slightly in the last minute.
2. 6–9 min: 5 reps per side of the world's greatest stretch, 8 per side of knee-to-wall ankle mobility and 8 light goblet squats.
3. 9–12 min onwards: squat ramp-up sets as in the table. After the last one, take a normal rest and start your working sets.

On an upper-body day, swap the mobility block for band drills and thoracic extensions, and ramp up on the bench or overhead press. The structure stays the same, so there is nothing to rethink each session.

Short on time?

If you only have 30–40 minutes, shorten the warm-up rather than skipping it. Cut the general part to three minutes and do one mobility drill. Keep the ramp-up sets on heavy main lifts, since those are what prepare you for the working weight; at most, drop the 40% step and go empty bar, 60%, 80%. During a Deload Week: When and How to Deload, when the weights are lighter, two or three ramp-up sets are plenty.

How long should a warm-up take?

Usually 10–15 minutes. Allow a little more if:

• you train early in the morning or in a cold gym
• the day's weights are close to your max
• you have been sitting all day or something feels stiff.

Beyond 20 minutes, a warm-up tends to eat into the energy you need for your working sets. Warm-up sets also do not count towards your weekly training volume, so do not log them as working sets.

Where does static stretching fit?

Static stretching means holding a muscle in a stretched position. Reviews (Behm and Chaouachi 2011; Behm et al. 2016) show that short holds of under 60 seconds per muscle group have only a small effect on strength. Longer holds can temporarily reduce strength and power, especially when they are not followed by a dynamic warm-up.

• Before training: dynamic drills and, if needed, a short hold under 30 seconds for a tight spot.
• After training or on another day: longer static stretches if you want to improve flexibility over time, such as the Couch Stretch.

Common mistakes

1. Jumping straight to the working weight: your first working set becomes a warm-up set, and technique suffers.
2. Too many warm-up reps: 10 reps at 85% just makes you tired.
3. Jumps that are too big: going from the empty bar to 90% does not prepare your nervous system.
4. Half an hour of stretching before squats: time and energy go to the wrong place.

If you are just starting out, also read Beginner Gym Program: Your First 8 Weeks. You can learn more about the workout logger or browse ready-made programs.