Sophie Bennett
Why a Proper Warm-Up Matters More Than You Think
Ask most people what they do before a heavy squat session and you will often hear the same thing: a couple of half-hearted leg swings and straight into the first working set. It feels efficient, but it quietly costs you performance. A good warm-up does three specific jobs. It raises your core temperature, which increases blood flow to working muscles and improves the speed at which nerve signals travel. It mobilises the joints you are about to load, so your hips, shoulders and ankles can move through the ranges the lift demands. And it prepares the nervous system, gradually waking up the muscles and movement patterns you are about to ask for maximum effort.
Skip it and you are not just risking injury. You are also leaving quality repetitions on the table, because your first heavy set becomes the warm-up instead.
The Three Phases of an Effective Warm-Up
Rather than a random collection of stretches, think of your warm-up as a short, structured progression. Three phases work well for nearly everyone.
- Raise: Five to eight minutes of low-intensity movement to lift your heart rate and body temperature. A brisk incline walk, rowing, cycling or skipping all work well. You should finish slightly warm and breathing a little harder, not fatigued.
- Mobilise and activate: Four to six minutes of targeted movement for the joints and muscles your session will hammer. This is where you earn your squat depth and shoulder range.
- Potentiate: Two to four progressively heavier sets of the main lift, or a closely related variation, to prime the pattern without draining your energy.
That is roughly ten to fifteen minutes in total. For most active adults and personal training clients, that is a small investment for a noticeable return.
What to Include Before a Strength Session
The exact drills should match the session, but a reliable template covers the whole body. Use the list below as a starting point and trim whatever your programme does not need.
- Hips: Leg swings front to back and side to side, 90/90 hip rotations, and glute bridges. Add a banded lateral walk if your session includes deadlifts or single-leg work.
- Ankles and knees: Ankle rocks against a wall and slow bodyweight squats, pausing at the bottom to open up the position.
- Spine and shoulders: Cat-cow, thoracic rotations on all fours, band pull-aparts and wall slides. These are especially valuable before overhead pressing or front squats.
- Core and bracing: Dead bugs or bird dogs, focusing on a slow exhale and a ribcage that stays down. This teaches the bracing you will need under a loaded bar.
Keep each drill to eight to twelve controlled repetitions. The goal is quality of movement, not a sweat session.
Tailoring the Warm-Up to the Day's Session
A good warm-up is specific. If you are coaching clients, build a short menu that matches the main lift and adjust it as the programme changes.
- Squat day: Emphasise ankles, adductors and thoracic extension. Goblet squats and hip flexor stretches earn their place here.
- Deadlift day: Prioritise hamstrings, glutes and hip hinge patterning. Romanian deadlifts with an empty bar, plus glute bridges, set you up well.
- Bench or overhead press day: Spend more time on the shoulders and upper back. Face pulls, band pull-aparts and scapular push-ups are excellent choices.
- Upper-body pull day: Open the lats and thoracic spine with hanging or lat-focused stretches, then wake up the mid-back before your first row.
On lower-body days, do not neglect the upper back. A stable, switched-on torso makes heavy squats and deadlifts far safer and more effective.
Common Mistakes to Avoid
Even well-meaning warm-ups go wrong in predictable ways. Watch for these and correct them early.
- Static stretching before heavy lifting. Long holds can temporarily reduce force output. Save them for after your session, or use short, active ranges beforehand.
- Treating the warm-up as a workout. If you are dripping with sweat before your first working set, you have borrowed energy you will need later. Keep it crisp and purposeful.
- Going through the motions. Rushing drills with sloppy form teaches your body nothing useful. Move slowly and deliberately so the pattern transfers to the lift.
- Skipping it when you are short on time. If you only have five minutes, do the raise and a couple of targeted drills rather than nothing at all.
Coaching It Well and Making It Stick
For personal trainers, the warm-up is a coaching opportunity, not dead time. Use it to observe how a client moves, pick up on stiffness or asymmetry, and set the tone for the session. A calm, focused start tends to produce a calm, focused lift.
For active adults training alone, the trick is routine. Keep your warm-up written down and repeat the same sequence for a few weeks so it becomes second nature. Once it is automatic, you will notice the difference in how your first working set feels, and you will be far less likely to skip it.
Warm-ups do not need to be complicated or long. Ten focused minutes, matched to the session ahead, will help you lift more safely, move better and get more from every set. Treat it as the first working part of your training, and it will repay you many times over.
