What a warm-up does, and what the evidence says
A 2015 review of warm-up strategies describes active warm-ups as raising temperature and bringing metabolic, neural and psychological changes that prepare you for the work ahead. A 2010 meta-analysis of 32 high-quality studies found that warming up improved performance in 79 per cent of the measures examined, and found little evidence that it was harmful. Its authors add that well-run randomised trials were few, so more are needed.
This guide makes no injury promise, because the research it draws on measured performance. A coach can build a warm-up around your programme and anything you tell them about your history; see personal training at RPM.
The three parts of a gym warm-up
| Part | What to do | Roughly how long | Move on when |
|---|---|---|---|
| Raise | Easy bike, cross-trainer or brisk treadmill walk at about 3 or 4 out of 10 | Five to ten minutes | You feel warm and your breathing has picked up, but talking is easy |
| Mobilise | Dynamic moves for the joints the session uses: leg swings, walking lunges, hip openers, arm circles, band pull-aparts | Three to five minutes | Each joint moves through the range the session will ask of it |
| Ramp up | Lighter sets of your first exercise, climbing towards your working weight | Two to four sets | The movement feels familiar at a load just under your first working set |
The raise wakes the body up, the mobilise part prepares the joints, and the ramp-up rehearses the exact movement. Skipping the last part is the most common shortcut, and the one that matters most on strength days.
Stretching: keep static holds short
A 2016 systematic review found that static stretches held for less than 60 seconds per muscle group had small effects on performance straight afterwards, while holds of 60 seconds or more produced larger short-term drops. Dynamic stretching produced small-to-moderate improvements when done within minutes of the activity. When dynamic activity followed the stretching, no clear effect on performance was seen.
- If you like static stretches before lifting, hold each for under a minute and follow them with dynamic moves.
- Save longer holds for after the session, or for a separate mobility day.
- Pilates and yoga-style mobility on rest days is a different thing from a warm-up, and needs no rushing.
Ramp-up sets on strength days
One common ladder before working sets of five on a squat or bench press. Percentages are of your working weight.
| Step | Load | Reps |
|---|---|---|
| 1 | Empty bar, or the lightest setting | 8 to 10 |
| 2 | About 40 per cent | 5 |
| 3 | About 60 per cent | 3 |
| 4 | About 80 per cent | 1 or 2 |
| 5 | Working weight | Your working sets begin |
Heavier working weights need more steps and light sessions need fewer. Keep the rests between ramp-up sets short: they should prepare you, not tire you.
- On a machine, one lighter set of 10 to 12 before your working sets is usually enough.
- Later exercises in the same session often need just one lighter set, because you are already warm.
- For rest and ordering across the working sets that follow, see compound lift training.
How the routine changes by session type
| Session | Raise | Mobilise | Specific part |
|---|---|---|---|
| Strength | Easy bike or cross-trainer | Hips, ankles, upper back and shoulders | Lighter sets of the first lift, climbing to working weight |
| Conditioning circuit | Easy bike, then two or three faster bursts | Lunges, inchworms, arm swings | One easy round of the actual circuit at half pace |
| Fitness boxing | Easy bike or light jogging on the spot | Shoulder circles, trunk rotations, hip openers | Shadow boxing and footwork, then a light first round on the bag |
| Pilates | A gentle walk or easy bike, if you arrive early | Breathing, spine rolls, hip circles | The instructor's opening exercises, which in many classes form the warm-up |
| Cardio intervals | Five to ten minutes easy | Leg swings and ankle circles | Two or three short build-ups before the first hard interval |
On conditioning days the build-up matters more than the stretching. The guide to conditioning from zero covers how hard each interval should feel.
Arriving from the heat outside
- A walk across a hot car park in summer can leave you sweating before you start. Feeling hot does not replace the movement prep or the ramp-up sets, which rehearse the session itself.
- Cool off in the air-conditioning first, drink some water, and keep the raise part easy.
- In Ramadan, if you are fasting, keep the raise part gentle and still do the ramp-up sets before lifting.
- For anything outdoors, follow official heat guidance. Heat and humidity add to the strain of exercise.
- Dizziness, nausea or unusual breathlessness are reasons to stop and get help, not to warm up harder.
A short warm-up for busy days
- Three minutes on the bike, building to a brisk pace.
- One round of ten bodyweight squats, ten walking lunges and ten band pull-aparts.
- Two ramp-up sets of your first lift, then straight into your working sets.
It fits a lunch-hour session or a tight slot before the school run, and it keeps the part that matters most: rehearsing the first lift.
Warming up at RPM
RPM is one club, on Level 4 of AD HUB Sports Complex in Al Manhal. Floor photos show treadmills, cross-trainers and an upright bike by tall windows, plus spin bikes, so the raise part has several options. The functional area's turf has room for lunges and inchworms, and its heavy bags serve boxing warm-up rounds.
- The women-only Ladies section has its own cardio and strength equipment, and the Pilates studio where reformer classes run.
- In personal training, ask your coach to write a warm-up into your plan. Atelier is the tier built around one-to-one coaching, and prices are confirmed on enquiry.
- Group class formats and times change, so ask the team which classes run when you want to train.
Sources
- Fradkin AJ, Zazryn TR, Smoliga JM. Effects of warming-up on physical performance: a systematic review with meta-analysis. Journal of Strength and Conditioning Research, 2010
- 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. Appl Physiol Nutr Metab, 2016
- McGowan CJ, Pyne DB, Thompson KG, Rattray B. Warm-up strategies for sport and exercise: mechanisms and applications. Sports Medicine, 2015
Questions, answered.
How long should a warm-up take?
Most gym warm-ups take five to fifteen minutes. Heavy strength days sit at the longer end because of the ramp-up sets.
Does a warm-up prevent injuries?
This guide does not claim that. The studies it cites measured performance, and the 2016 stretching review found no clear effect of static stretching on injury rates. If you have pain or a past injury, ask a doctor or physiotherapist how to prepare.
Is ten minutes on the treadmill enough?
It covers the first part. Add some movement for the joints you will use and lighter sets of your first exercise.
Should I warm up before a group class?
Arrive early and do the raise part, then follow the instructor. Many classes begin with a guided warm-up of their own.