Most running injuries happen in the first kilometre. A proper warm-up raises muscle temperature, primes your nervous system, and reduces injury risk — in as little as 3 minutes.
When you're resting, muscles are cool, heart rate is low, and the synovial fluid in your joints is thick. Taking your body from that state to running effort abruptly puts enormous stress on tissues that aren't ready for it.
Raises muscle temperature. Warm muscles contract faster, generate more force, and are more elastic — meaning they can stretch further before tearing. A 1°C rise in muscle temperature improves power output by roughly 2–5%.
Increases blood flow. Your body redirects blood from the organs to working muscles. At rest, muscles receive about 15–20% of cardiac output. During exercise that rises to 80–85%. The transition doesn't happen instantly.
Primes the nervous system. Running requires precise neuromuscular coordination. A warm-up activates the neural pathways between brain and muscles, improving reaction time, coordination, and economy of movement.
Lubricates joints. Synovial fluid becomes less viscous with movement and warmth, reducing friction in the knee and hip joints where most running injuries occur.
This is the most common warm-up misunderstanding. Static stretching — holding a stretch for 30+ seconds — before running is not recommended. Studies consistently show it temporarily reduces muscle strength and power output by up to 8%, and does not reduce injury risk when done cold.
Dynamic stretching — controlled movements through a range of motion — is what belongs in a pre-run warm-up. Save static stretching for after the run when muscles are warm and pliable.
The cool-down is when static stretching belongs. After a run, muscles are warm, pliable, and primed to lengthen. Spending 5–10 minutes on targeted stretches accelerates recovery, reduces next-day soreness, and maintains flexibility.
1. Easy jog/walk — 2 min. Bring heart rate down gradually. Stopping abruptly after hard running causes blood to pool in the legs.
2. Standing quad stretch — 30 sec each leg. Hold ankle behind you, keep knees together.
3. Standing hamstring stretch — 30 sec each leg. Foot up on a low surface, hinge forward from the hips.
4. Hip flexor lunge — 45 sec each side. Low lunge, back knee on ground, push hips forward gently.
5. Calf stretch — 45 sec each leg. Hands on wall, one leg back, heel pressed down. Add a bent-knee version for the deeper Soleus muscle.
Extend to 10–15 minutes and add pigeon pose (glutes/piriformis) and figure-four stretch (IT band and outer hip). These areas take the most load during long runs.