A good warm-up isn't just a formality before the "real" training starts — it's what gets a young athlete's body genuinely ready to perform and lowers the chance of the kind of niggling strain that comes from going straight from standing still into a sprint. It also doesn't need to be complicated. Five to ten minutes, done consistently, covers what matters.
Why warming up matters
The UK Chief Medical Officers' physical activity guidelines recommend children and young people get an average of 60 minutes of moderate-to-vigorous activity a day, across a mix of activities — a warm-up is what safely bridges "not moving" to that vigorous activity, gradually raising heart rate, loosening joints, and waking up the muscles that are about to be used hard. Skipping it doesn't just raise injury risk — most kids also perform better once properly warmed up, since sprint speed, jump height and reaction time all improve once the body is genuinely ready.
What a good warm-up actually looks like
The most effective pre-training warm-up is active, not static — movement-based drills that gradually build in intensity, rather than standing still and holding a stretch (that's for after training, see our Stretching guide). A simple structure that works for almost any sport:
- 2-3 minutes of light movement — jogging, skipping, or gentle shuttle runs to raise heart rate gradually.
- 2-3 minutes of dynamic mobility — leg swings, walking lunges, arm circles, high knees, heel flicks — moving joints through their full range rather than holding a position.
- 2-3 minutes of sport-specific movement — for football or rugby, gentle passing and short sprints; for swimming, arm circles and shoulder mobility; for racket sports, shadow strokes and footwork patterns. This is where the warm-up starts to resemble the actual activity.
- A few short bursts at near-full effort — 2-3 short sprints or explosive movements in the last minute or two, so the body has felt something close to match intensity before it's actually needed.
How long should it take?
5-10 minutes is enough for most training sessions; matches and competitions often warrant closer to 10-15 minutes, since there's more standing around waiting beforehand. Little and often beats a long, elaborate routine nobody sticks to — consistency matters more than complexity here.
What to avoid
Long, held static stretches right before activity. Holding a stretch for 20-30+ seconds while cold can temporarily reduce muscle power output — better saved for the cool-down (see Stretching).
Skipping it when short on time. It's tempting to cut the warm-up when running late, but this is exactly when a rushed, cold start raises strain risk most.
Making it feel like a punishment. For younger children especially, keeping the warm-up varied, game-like, and even a bit fun (tag-style movement games work well for under-9s) gets far better buy-in than drilling it like adult training.
Frequently asked questions
Does my child really need to warm up before a casual kickabout? For informal, low-intensity play, a proper structured warm-up matters less. For organised training or a match — anything involving sprinting, tackling, or sudden direction changes — a few minutes of warm-up genuinely helps.
Should warm-ups be different for younger kids? The structure is similar, but keep it shorter, more game-based, and less regimented for under-9s — a game of tag achieves the same physiological purpose as formal drills, with much better engagement.
Is stretching part of the warm-up? Dynamic stretching (moving through a range of motion) belongs in the warm-up; static stretching (holding a position) is better placed after training — see our Stretching guide for the full picture.
How is this different for swimming or gymnastics? The principles are the same — gradual, active, sport-specific movement — but the specific drills change: shoulder and ankle mobility matter more for swimming, and controlled joint mobility work matters more for gymnastics, given the ranges of motion each sport demands.
This page provides general educational guidance based on UK Chief Medical Officers' physical activity guidelines and general sports-safety practice, and is not a substitute for advice from a qualified coach, physiotherapist, or GP — particularly if your child has an existing injury or medical condition.