How to Warm Up Before a Workout: The Evidence-Based RAMP Protocol

The 4-Phase Warm-Up, in One Table

What is a good warm-up actually for?

Not sweat. Not box-ticking. A warm-up has exactly one job: raise your body’s readiness until it matches the demands of the session you’re about to do. The cleanest, most repeatable way to get there is a four-phase structure called RAMP — Raise, Activate, Mobilize, Potentiate.

Here’s the whole thing, in eight to twelve minutes:

Phase	Goal	Example exercises	Duration
Raise	Lift body temp, heart rate, blood flow	Brisk walk → easy jog, rower, bike, jumping jacks	~2–3 min
Activate	Switch on the muscles you’re about to use	Glute bridges, band walks, scapular slides, dead bugs	~2 min
Mobilize	Move the working joints through full range	Leg swings, walking lunges, world’s-greatest-stretch, thoracic rotations	~3 min
Potentiate	Prime the nervous system for the real intensity	Ramp-up sets to your first working weight, a few crisp explosive reps	~1–2 min

The structure comes from strength and conditioning coach Ian Jeffreys, who introduced the RAMP framework as a way to make warm-ups purposeful instead of a random jog-and-stretch ritual.¹ Each phase has a job. Skip one and you leave readiness on the table.

The phases also flow in the right order: you raise temperature first because everything downstream works better in a warm muscle, and you potentiate last because that’s the dress rehearsal for the actual work.²

Here’s what this means for you: the warm-up is not generic. A heavy-squat day and an easy zone-2 run need different activation, different mobility, and a different potentiation phase. SensAI builds the warm-up directly into each generated session — the drills it prescribes change with the muscles and intensity that day’s workout actually demands, so you’re not warming up your shoulders before leg day.

Why Warm Up At All? (Performance and Injury)

Do you actually need to warm up before lifting? Yes — for two separate reasons, and it helps to keep them separate.

Think of cold muscle like cold modeling clay. Try to bend it fast and it cracks; warm it in your hands first and it moves smoothly. Your tissues behave the same way.

Reason one: performance. A warmer muscle contracts and relaxes faster, conducts nerve signals quicker, and produces more power. The relationship is surprisingly tight — for short, intense efforts, performance improves roughly 2–5% for every 1°C rise in muscle temperature.³ That’s the difference between a clean top set and a grindy one.

The warm-up review literature backs this up across sports: an active warm-up reliably improves subsequent performance through temperature, metabolic, and neural mechanisms, while doing essentially nothing harmful for recreational athletes.² This holds for the upper body too — a systematic review of upper-body warm-up found performance benefits with no injury downside.⁴

Reason two: injury — honestly framed. A structured warm-up reduces injury risk; it does not eliminate it. The strongest evidence comes from soccer’s FIFA 11+ program, a standardized neuromuscular warm-up. A meta-analysis pooling the trials found the 11+ cut overall injuries by 39%.⁵

That is a large, real effect. But note the framing: 39% fewer, not zero. A warm-up is a powerful risk reducer, not a force field. Anyone promising injury-proofing is selling something.

Phase 1 — Raise

The first phase is two to three minutes of low-intensity, whole-body movement that gets your temperature, heart rate, and blood flow climbing.

The goal is “broken a light sweat,” not “out of breath.” You’re priming the system, not training it.

Match the movement to the session. A runner walks, then ramps into an easy jog. A lifter might row, bike, or do a couple of minutes of easy whole-body movement. The mode matters less than the gradual climb.

One detail the research is clear on: move, don’t sit in a sauna. Active warm-ups — where you generate the heat through movement — outperform passive warming because they raise temperature and prime the metabolic and neural systems at the same time.² A hot shower warms the tissue; it doesn’t teach the nervous system anything.

Phase 2 — Activate & Phase 3 — Mobilize

These two phases are where a dynamic warm-up earns its name — and where most people either skip straight to the bar or waste time holding long static stretches that do nothing for the work ahead.

Activate wakes up the specific muscles you’re about to load, so they fire on time instead of letting a neighbor compensate. Think glute bridges and band walks before squats, or scapular slides and band pull-aparts before pressing.

Mobilize then drives the working joints through the full range of motion you’ll demand under load — actively, in motion, not parked in a stretch.

The distinction matters because the evidence strongly favors dynamic movement here over static holds. Dynamic stretching tends to preserve or slightly improve power output, whereas long static holds before training can blunt it.⁶ In one recent trial, youth athletes who did a RAMP-style dynamic warm-up jumped higher and sprinted faster than the same athletes after static stretching or no warm-up at all.⁷ Move through the range; don’t hold the end of it.

Here’s a quick map by session type:

Session	Activate	Mobilize
Leg day	Glute bridges, lateral band walks	Leg swings, walking lunges, world’s-greatest-stretch, hip openers
Upper day	Scapular slides, band pull-aparts	Thoracic rotations, arm circles, band shoulder pass-throughs
Running	Glute bridges, ankle hops	Leg swings, lunge-with-rotation, ankle and hip circles

This is exactly where personalization pays off, because the right drills depend on what you’re training that day. SensAI pulls the activation and mobility work that matches the target muscles of the upcoming session — so a posterior-chain day surfaces hip and hamstring prep, while a push day surfaces thoracic and shoulder prep, instead of one canned routine for everything.

If your hips feel locked up before squats, work through a dedicated hip mobility routine for tight hips — and if you’re not sure your bottom position is honest, our guide to how to squat covers depth and bracing. Save the long, relaxing holds for after the session or a standalone flexibility routine.

Phase 4 — Potentiate

The final phase is the dress rehearsal: a few escalating efforts that prime your nervous system for the exact intensity coming next.

Think of revving an engine before you redline it. You don’t go from idle to full throttle — you bring the RPMs up first so the system is ready when you floor it.

For lifting, potentiation means ramp-up sets: progressively heavier sets that climb toward your first working weight. If your working weight is 100 kg, you don’t walk up and load 100 — you build through the empty bar, 40, 60, 80, then 100. Each set greases the pattern and recruits more motor units.

For power or sprint work, it’s a handful of submaximal explosive reps — a few rising jumps or strides at increasing effort.

The phase has a physiological name: post-activation potentiation. A meta-analysis found that a heavier “conditioning” effort can measurably boost subsequent jump, sprint, and throw performance, with the effect generally emerging after a few minutes of rest rather than instantly.⁸ For most lifters this happens naturally inside normal ramp-up sets — you don’t need to engineer it.

The mental model: your warm-up should be a dimmer-switch version of your session. Same movements, same patterns, gradually rising intensity — never a different workout bolted on the front.

In SensAI’s guided tracker, those ramp-up sets are prescribed automatically ahead of your working sets, with the rest timer running between them, so the potentiation phase is built into the flow rather than something you have to remember to do. (If you’re newer to barbell work, our exercise form and safety guide is worth a read alongside it.)

Is Static Stretching Bad Before a Workout? The Honest Answer

Static stretching before a workout isn’t “bad” — it’s dose-dependent, and most people simply do too much of it at the wrong time.

Here’s the clean rule, straight from the research: hold a stretch for under ~60 seconds per muscle and the effect on strength and power is trivial to none. Push individual holds toward and past ~60 seconds, and you start to see measurable losses — largest for explosive, power-based work.⁹

The canonical synthesis comes from David G. Behm, University Research Professor at Memorial University of Newfoundland and one of the most-cited researchers on stretching and warm-up. His team’s systematic review pegged the average acute performance change after static stretching at about −3.7%, with dynamic stretching landing slightly positive — and crucially, identified total stretch duration as the lever that flips a trivial effect into a real one.⁹

A controlled follow-up nailed the threshold directly: 30 or 60 seconds of static stretching per muscle inside a full warm-up left strength and power intact, while 120 seconds produced clear deficits.¹⁰

So here’s the do-this / not-that:

Do this	Not that
Dynamic stretches in motion (leg swings, lunges)	Long static holds before heavy or explosive work
Short mobility holds (<30 s) if a joint feels stiff	Sitting in a 90-second hamstring stretch pre-lift
Save long, relaxing holds for after training	Treating static stretching as your whole warm-up

The reframe: static stretching isn’t the villain. It’s mis-timed when it’s over-dosed before training. Long holds are genuinely useful — for range of motion and for relaxation — they just belong after your session or in a dedicated mobility block. Build that into a proper full-body stretching routine on its own time.

Do-This / Not-That: The 10-Minute RAMP Routine

Here’s the whole protocol as a worked example — a lower-body lifting day, start to finish, in about ten minutes.

Raise (2–3 min)

Easy bike or row, or 2 minutes of light whole-body movement
Build until you’ve broken a light sweat — not winded

Activate (2 min)

Glute bridges — 2 × 12
Lateral band walks — 2 × 10 each direction
Dead bugs — 2 × 8 each side

Mobilize (3 min)

Leg swings — 10 each leg, front-to-back and side-to-side
Walking lunges — 8 each leg
World’s-greatest-stretch — 4 each side

Potentiate (1–2 min)

Squat ramp-up sets: empty bar → ~40% → ~60% → ~80% → first working weight
2–4 crisp reps per set, rising intensity, full rest before working sets

That’s it. Eight to twelve minutes, four phases, every minute pointed at the work ahead.

Do this	Not that
8–12 minutes, four phases	30-second jog, then straight to the bar
Match drills to today’s session	One identical routine for every workout
Dynamic movement through range	Long static holds before heavy sets
Ramp up to your working weight	Cold-starting your first working set

Your Warm-Up Should Change When Your Readiness Does

Should you do the exact same warm-up every single day?

No — because you aren’t the same every day. The body you bring to the gym on six hours of broken sleep, sore quads, and a stressful week is not the body you brought in last Tuesday after nine hours and a rest day. Your warm-up, and the session it precedes, should reflect that.

Recovery markers like resting heart-rate variability (HRV), sleep, and resting heart rate quietly track how much load your system is currently absorbing. On a depleted day, you may need a longer Raise phase, more mobility, and a more conservative session. On a primed day, you can be sharper and push.

The principle isn’t new to coaching, but the data now makes it actionable. In one trial, runners whose training was guided by daily HRV improved at least as much as a fixed-plan group while doing fewer hard sessions — the readiness signal told them when to push and when to back off.¹¹

This is the bridge from “good warm-up” to “smart training.” SensAI reads your HRV, sleep, resting heart rate, and recovery from your wearable — Apple Watch directly, or Garmin, Oura, and WHOOP through Apple HealthKit — and scales both the warm-up emphasis and the workout itself to where your readiness actually sits that morning. A rough night doesn’t get the same plan as a great one.

If you’re just getting started and want a structure to build from, our beginner gym workout plan is a solid first step — add the RAMP warm-up to the front of every session and you’ve got a complete, evidence-based template.

Warm up for the workout you’re actually capable of today. That’s the whole skill.

References

Jeffreys I. “Warm up revisited – the ‘RAMP’ method of optimising performance preparation.” Professional Strength and Conditioning, 2007. https://www.uksca.org.uk/uksca-iq/article/85/warm-up-revisited-the-ramp-method-of-optimising-performance-preparation ↩
McGowan CJ, Pyne DB, Thompson KG, Rattray B. “Warm-Up Strategies for Sport and Exercise: Mechanisms and Applications.” Sports Medicine, 2015. https://pubmed.ncbi.nlm.nih.gov/26400696/ ↩ ↩² ↩³
Racinais S, Oksa J. “Temperature and neuromuscular function.” Scandinavian Journal of Medicine & Science in Sports, 2010. https://pubmed.ncbi.nlm.nih.gov/21029186/ ↩
McCrary JM, Ackermann BJ, Halaki M. “A systematic review of the effects of upper body warm-up on performance and injury.” British Journal of Sports Medicine, 2015. https://pubmed.ncbi.nlm.nih.gov/25694615/ ↩
Thorborg K, Krommes KK, Esteve E, Clausen MB, Bartels EM, Rathleff MS. “Effect of specific exercise-based football injury prevention programmes on the overall injury rate in football: a systematic review and meta-analysis of the FIFA 11 and 11+ programmes.” British Journal of Sports Medicine, 2017. https://pubmed.ncbi.nlm.nih.gov/28087568/ ↩
Behm DG, Chaouachi A. “A review of the acute effects of static and dynamic stretching on performance.” European Journal of Applied Physiology, 2011. https://pubmed.ncbi.nlm.nih.gov/21373870/ ↩
Girginer FG, Seyhan S, Açar G, Bilici MF, Bilici ÖF, Soylu Ç. “Acute effects of the RAMP warm-up on sprint and jump performance in youth soccer players.” Frontiers in Physiology, 2025. https://pmc.ncbi.nlm.nih.gov/articles/PMC12234454/ ↩
Seitz LB, Haff GG. “Factors Modulating Post-Activation Potentiation of Jump, Sprint, Throw, and Upper-Body Ballistic Performances: A Systematic Review with Meta-Analysis.” Sports Medicine, 2016. https://pubmed.ncbi.nlm.nih.gov/26508319/ ↩
Behm DG, Blazevich AJ, Kay AD, McHugh M. “Acute effects of muscle stretching on physical performance, range of motion, and injury incidence in healthy active individuals: a systematic review.” Applied Physiology, Nutrition, and Metabolism, 2016. https://pubmed.ncbi.nlm.nih.gov/26642915/ ↩ ↩²
Reid JC, Greene R, Young JD, Hodgson DD, Blazevich AJ, Behm DG. “The effects of different durations of static stretching within a comprehensive warm-up on voluntary and evoked contractile properties.” European Journal of Applied Physiology, 2018. https://pubmed.ncbi.nlm.nih.gov/29721606/ ↩
Vesterinen V, Nummela A, Heikura I, Laine T, Hynynen E, Botella J, Häkkinen K. “Individual Endurance Training Prescription with Heart Rate Variability.” Medicine & Science in Sports & Exercise, 2016. https://pubmed.ncbi.nlm.nih.gov/26909534/ ↩