How many warmup sets should I do?

For most lifters, 4-5 warmup sets works well. Start with the empty bar, then increase weight in even jumps until you reach your working weight. More warmup sets for heavier working weights.

Should warmup sets be slow or fast?

Neither. Move the bar with intent, but don't rush. The goal is preparing your body, not fatiguing it. Rest 30-60 seconds between warmup sets to stay fresh.

Do I need to stretch before lifting?

Static stretching before lifting can actually reduce performance. Dynamic movements and warmup sets are more effective. Save static stretching for after your workout.

Do warmup weights need to be exact?

No. Percentages like 40/60/80% are rough targets, not prescriptions. Round each warmup set to the nearest weight you can actually build with your plates — being 5 lbs off a warmup target changes nothing, but hunting for exact numbers wastes time and energy.

How to warm up for heavy lifts: the complete guide

You’ve seen both extremes in every gym. The guy who walks in cold and loads 315 on the bar. The other guy who spends 40 minutes foam rolling before touching a weight.

Both are wrong. Warmups matter, but there’s an efficient way to do them that prepares you without wasting time or energy.

Why warmup sets matter

A proper warmup accomplishes three things:

1. Increases blood flow to working muscles A 2010 study in the Journal of Strength and Conditioning Research found that muscle temperature increases of 1-2°C improved power output by 4-6%. Warm muscles contract faster and harder.

2. Rehearses the movement pattern Your first squat of the day shouldn’t be at max weight. Lighter sets groove the technique before load demands perfection.

3. Identifies problems before they matter Something feel off? Better to notice at 135 than at 315. Warmups let you catch issues and adjust — an important part of injury prevention.

What warmups don’t need to do: fatigue you. If you’re breathing hard before your work sets, you’ve warmed up too much. For proper technique on each movement, refer to the exercise guide.

The basic protocol

For any lift, start with the empty bar and work up in jumps:

Empty bar: 2 sets of 5-10 reps 40% of work weight: 1 set of 5 60% of work weight: 1 set of 3 80% of work weight: 1 set of 2

Then begin your work sets.

Example: Working weight is 225 lbs

45 lbs (bar): 2 × 5
95 lbs: 1 × 5
135 lbs: 1 × 3
185 lbs: 1 × 2
225 lbs: Work sets begin

The reps decrease as weight increases. You’re preparing, not pre-exhausting.

Round to what your plates can build

Here’s a detail that trips up more lifters than you’d think: percentages produce weights you often can’t load. Say your working weight is 72.5 lbs — 60% of that is 43.5 lbs, which doesn’t exist on a standard bar with standard plates. If you write “45” on your warmup plan but load 42.5 because that’s what the plates allow, your log and your bar disagree — and neither number was ever important.

The fix is to think in loadable weights from the start:

Compute the rough percentage target
Round to the nearest weight your plates can actually build (usually the nearest 5 lb / 2.5 kg)
Load that, and don’t think about it again

Precision genuinely doesn’t matter below ~80% — a warmup set at 90 lbs instead of 87 prepares you exactly as well. Save the exactness for your work sets, where progression math depends on it. And no, you don’t need microplates for warmups; they exist to keep work-weight progression alive, not to hit percentage targets.

If you want to skip the mental math, our plate calculator shows the closest loadable weight and the exact plates per side for any target.

Exercise-specific warmups

Squat warmup

Squats demand the most warmup because they load the most muscle. Start with this before your bar work:

2-3 minutes of movement:

Air squats (10-15)
Leg swings front-to-back (10 each leg)
Leg swings side-to-side (10 each leg)
Hip circles (10 each direction)

Then follow the barbell warmup protocol above.

If your working weight is under 135 lbs, simplify:

45 × 10
95 × 5
Work sets

Bench press warmup

The shoulder joint benefits from specific preparation:

1-2 minutes of movement:

Arm circles (10 each direction)
Band pull-aparts (15-20)
Push-ups (10)

Then follow the barbell protocol. Bench usually needs fewer warmup sets than squat because the load is lighter.

Deadlift warmup

Deadlifts in 5x5 are only 1×5, so your warmup should be thorough but brief:

1-2 minutes of movement:

Hip hinges with no weight (10)
Leg swings (10 each leg)
Cat-cow stretches (10)

Then:

135 × 5 (or 95 if work weight is low)
60% × 3
80% × 2
Work set

Overhead press

The OHP benefits from shoulder-specific prep:

1-2 minutes:

Arm circles
Band pull-aparts
Shoulder dislocates with band or stick

Then standard protocol. OHP weights are typically light enough that 2-3 warmup sets suffice.

Barbell row

Rows follow deadlifts in the 5x5 program, so you’re already somewhat warmed up:

95 or 135 × 5 (depending on work weight)
70% × 3
Work sets

Adjustments for heavier lifts

As your working weights increase, you need more warmup sets. The jump from 135 to 315 is too large for most people.

Working weight 225-315 lbs:

Bar × 10
135 × 5
185 × 3
225 × 2
275 × 1 (if working weight is 315)
Work sets

Working weight 315-405 lbs:

Bar × 10
135 × 5
185 × 3
225 × 3
275 × 2
315 × 1
365 × 1 (if working weight is 405)
Work sets

The principle: smaller jumps as you approach working weight. Never more than 50-60 lb jumps once you’re past 70% of your max.

Rest between warmup sets

Bar and light sets (under 60%): 30-45 seconds. You’re not recovering, just preparing.

Moderate sets (60-80%): 60-90 seconds. Give yourself time to feel ready.

Heavy singles (80%+): 2 minutes. These are preparation for work sets — don’t rush.

Your warmup shouldn’t take forever. A typical 5x5 warmup takes 5-8 minutes per exercise.

Common warmup mistakes

Too much cardio first

Five minutes on the rower is fine. Twenty minutes on the treadmill before squats depletes glycogen and fatigues your legs before you’ve touched a bar.

Static stretching before lifting

A 2013 meta-analysis in the Scandinavian Journal of Medicine and Science in Sports found static stretching reduces strength and power for up to an hour afterward. Save it for after your workout.

Too many warmup reps

If your warmup sets total 50 reps before you start working, you’ve done too many. Warmups should prepare, not accumulate volume.

Rushing through

Speed isn’t the goal. Move with purpose. Practice the positions you’ll use at heavy weight. Focus on proper breathing and bracing during your warmup sets so it becomes automatic under heavy loads.

Inconsistency

Use the same warmup routine every session. Your body learns to associate those movements with “time to lift.” This mental preparation matters.

The full session structure

General warmup (2-3 minutes): Light movement to raise body temperature
Exercise-specific movement (1-2 minutes): Mobility work for the lift you’re about to do
Barbell warmup sets (4-6 sets): Progressive loading to working weight
Work sets: Your programmed training

For a 5x5 workout with three exercises, total warmup time should be 15-20 minutes across the session — not per exercise.

When you’re short on time

Minimum effective warmup:

10 bodyweight squats or push-ups
Empty bar × 10
60% × 5
Work sets

This isn’t ideal, but it’s better than going in cold. Something always beats nothing.

Track everything

Your warmup is part of your training. Note what works. If you feel better after a specific preparation, keep it.

The Lift5x5 app helps you track not just work sets but patterns that lead to good sessions. Start building data from day one.

Check the 5x5 training guide for complete program structure, the exercise guide for all five lifts, and our detailed articles on squats, bench, and deadlifts.