Athletes stretch before a game primarily to prepare their muscles and nervous system for intense, explosive movement. But the science behind pre-game stretching has shifted significantly in recent years, and what most athletes did 20 years ago looks very different from what sports science recommends now. The short version: dynamic stretching warms up the body and sharpens coordination, while long holds of static stretching can actually blunt power output if done incorrectly.
What Stretching Actually Does to Your Body
When you stretch a muscle before activity, two things happen. First, the muscle and its surrounding connective tissue temporarily become more pliable, increasing how far a joint can move. Research published in Scientific Reports shows that this acute gain in range of motion is typically between 1 and 6 degrees, with the biggest improvement happening in the first few repetitions. After about four or five stretches of the same muscle, gains plateau, and the added flexibility returns to baseline within roughly an hour.
Second, and more importantly for game performance, stretching signals the nervous system to start ramping up. Dynamic stretching in particular increases electrical activity in muscles, meaning more motor units (the individual nerve-muscle connections that produce force) fire during movement. This translates to faster reflexes, better coordination, and muscles that are primed to contract hard when the whistle blows.
Dynamic vs. Static: Why the Type Matters
Dynamic stretching involves controlled movements through a joint’s full range: leg swings, walking lunges, arm circles, high knees. These mimic the actions athletes will perform during competition, and they engage both the muscles and the central nervous system simultaneously. Studies using electromyography (sensors that measure muscle activation) consistently show that dynamic stretching increases the amplitude of electrical signals in muscles, indicating greater neuromuscular efficiency and improved reflex speed.
Static stretching, the classic “hold and breathe” approach, tells a different story depending on how long you hold each stretch. A systematic review of the research found that holds under 30 seconds produced essentially no loss in maximal muscle performance, averaging just a 1.1% reduction. Holds of 30 to 45 seconds were similarly harmless, at about 1.9%. But stretches held for 60 seconds or longer showed a clear, dose-dependent drop in strength and power output. The longer the hold, the greater the performance loss.
This is why modern warm-up protocols have largely moved away from prolonged static stretching as a standalone routine. An international panel of stretching researchers now recommends against holding any single muscle stretch for more than 60 seconds before activities requiring maximal strength or explosiveness. Short static stretches (5 to 30 seconds) are considered fine, especially when folded into a broader dynamic warm-up.
Does Stretching Prevent Injuries?
This is the reason most people assume athletes stretch, and the evidence is surprisingly inconclusive. A systematic review of the available research found that stretching was not significantly associated with a reduction in total injuries, with an odds ratio of 0.93 (essentially no meaningful difference between stretchers and non-stretchers). The subgroup analyses, looking at specific injury types and populations, told the same story.
That doesn’t mean stretching is useless for injury prevention. It means the blanket claim that “stretching prevents injuries” isn’t well supported by controlled trials. What likely matters more is the full warm-up: raising muscle temperature, gradually increasing heart rate, and rehearsing sport-specific movements. Stretching is one piece of that process, not a magic shield against strains and tears.
Warming Up the Nervous System
One of the most underappreciated reasons athletes stretch before games has nothing to do with muscle length. Dynamic stretching enhances signal transmission between the brain, spinal cord, and muscles. Think of it as calibrating the communication lines. When an athlete performs high knees or lateral shuffles during warm-up, the nervous system practices coordinating those exact movement patterns at increasing speeds. By game time, the pathways are already active and responsive.
This neuromuscular priming helps explain why athletes who skip warm-ups often feel “sluggish” in the first few minutes of play. Their muscles aren’t cold in a literal sense, but the neural circuits driving those muscles haven’t been activated yet. Dynamic stretching essentially flips those circuits on before they’re needed at full intensity.
The Mental Side of Pre-Game Stretching
For many athletes, stretching serves a psychological function that’s just as important as the physical one. Pre-performance routines, whether they involve a specific warm-up sequence, breathing patterns, or familiar movements, help signal to the brain that it’s time to focus. These routines block out distractions and create a mental bridge between everyday mode and competition mode.
Progressive muscle relaxation, a technique that involves deliberately tensing and then releasing muscle groups, reduces the physical tension that accompanies pre-game anxiety and gives athletes a sense of control over their body. Even athletes who know the injury-prevention data is mixed often keep their stretching routines because the ritual itself builds confidence and mental readiness. That consistency matters: knowing your body has gone through the same preparation it always does before a good performance is a powerful form of self-assurance.
What a Modern Pre-Game Routine Looks Like
Based on current evidence, the most effective pre-game preparation combines several elements in a specific order. Athletes typically start with light aerobic activity (jogging, cycling, or skipping) to raise core body temperature and increase blood flow to muscles. This alone makes tissues more pliable and reduces stiffness.
Next comes dynamic stretching tailored to the sport. A soccer player might do leg swings, lateral lunges, and high-knee runs. A basketball player might add arm circles, torso rotations, and quick lateral shuffles. The goal is to move every major joint through its full range while progressively increasing speed and intensity.
If an athlete feels tight in a specific area, short static stretches of 5 to 30 seconds, repeated for four or five sets, can help. The key is keeping those holds brief and following them with dynamic movement so the nervous system stays activated. Finishing with sport-specific drills at near-game intensity (sprints, cuts, jumps, or throws) completes the transition from rest to readiness.
The entire process typically takes 15 to 25 minutes. It’s designed not just to loosen muscles but to progressively ramp up the cardiovascular system, sharpen neural pathways, and lock in the mental focus that separates a flat start from a strong one.