Stretching before or after training: what the evidence says in 2026

The debate has been going around locker rooms and running groups for decades: should I stretch before, after, or better not at all? The short answer, according to the updated evidence, is that it depends on the type of stretching and the timing. And no, you won’t avoid all injuries by stretching for five minutes before a run.

This article is aimed at amateur athletes at a beginner to intermediate level who train 2-5 days a week (strength, running, cycling, team sports) and want to know what to do with stretching without wasting time on rituals that add nothing.

What the scientific evidence says in 2026

Systematic reviews from recent years (Behm et al., 2023, Sports Medicine; Blazevich et al., 2022) agree on several points:

• Prolonged static stretching (>60 seconds per muscle) right before strength or power activity reduces performance by between 3 and 5%.
• Dynamic stretching within a warm-up improves or at least does not impair subsequent performance.
• The effect of stretching on injury prevention is modest and depends on the sport. In disciplines with many changes of direction (football, padel, basketball) there is a positive signal; in continuous running, the evidence is weak.
• Stretching does not prevent muscle soreness in any clinically relevant way (Cochrane review, Herbert et al., updated).

In short: stretching works, but not for what they told you at school.

Dynamic stretching before: what it is and why it works

These are active movements that take the joint through its range of motion without holding the final position. Walking lunges, leg swings, trunk rotations, bodyweight squats, gentle skipping.

They work in two ways: they raise muscle temperature (improving force production) and activate the nervous system (better motor unit recruitment). A warm-up with 8-10 minutes of progressive dynamic mobility is enough for most people.

Practical example before running

• 3-5 minutes of very easy jogging (RPE 3/10).
• 2 sets of: 10 lunges, 10 forward-backward leg swings, 10 lateral swings, 10 hip rotations.
• 4-6 progressions of 20-30 metres increasing pace.

Practical example before strength training

• 5 minutes of easy cycling or rowing.
• Movement-specific mobility: if you’re going to squat, bodyweight squats, a deep squat held for 10 s, cat-cow.
• Ramp-up sets with an empty bar and light loads.

If you’re interested in fine-tuning warm-up intensity, this guide on how to measure intensity with RPE will help.

Static stretching after: what it’s really for

Static stretching (holding the position for 20-45 seconds) has a clear role: improving flexibility and joint range of motion over the medium term. With 2-3 weekly sessions of 5 minutes per muscle group, improvements are seen within 4-8 weeks (Thomas et al., 2018, Journal of Sports Science & Medicine).

What it does not do in a significant way:

• Reduce muscle soreness.
• Speed up recovery.
• Prevent injuries in continuous running.

So why stretch afterwards? Because if your sport or daily life requires wide ranges of motion (a football kick, a deep squat, pull-ups, sitting for 8 hours), gaining flexibility has functional value. And because many people see it as part of the cool-down ritual, which is fine as long as you don’t confuse it with genuine active recovery.

Guidelines by discipline

Runners: dynamic before (mandatory), optional static after focused on calves, soleus, hamstrings, psoas and gluteus medius. If you have recurring discomfort, check this article on the most common injuries in runners.

Strength (gym): movement-specific dynamic mobility + ramp-up sets. Static after only if you’re seeking to gain range in the hips or ankles.

Contact sports or sports with changes of direction: a FIFA 11+ style warm-up or similar (mobility + strength + light plyometrics) shows injury reductions of 30-40% in several studies.

Cycling: hip and upper back mobility before. Stretching hip flexors and chest afterwards offsets the sustained posture.

Common mistakes

1. Stretching cold right after getting up. The tissue isn’t ready; 2-3 minutes of gentle movement beforehand is better.
2. Long static stretches right before strength or sprinting. Lowers acute performance. If you need to gain range in a specific muscle, do it in a separate session.
3. Confusing stretching with warming up. Stretching doesn’t raise temperature or activate the nervous system the way dynamic movement does.
4. Pushing through pain. Stretching should produce tension (RPE 4-6/10), never sharp pain.
5. Expecting stretching to cure injuries. If you have persistent pain, you need a diagnosis, not more stretching.

Warning: if you are pregnant, have hypermobility, a disc herniation, a prosthesis or an acute injury, consult your physiotherapist before applying flexibility routines. Stretching more is not always better.

Practical wrap-up: what to do tomorrow

1. Add 8-10 minutes of dynamic warm-up before your next session: 3-5 min of gentle cardio + movement-specific mobility for the pattern you’re going to train.
2. Save static stretching for afterwards or for separate sessions: if you want to improve flexibility, schedule 2-3 weekly sessions of 10-15 minutes with 30 s per position.
3. Stop expecting stretching to save you from injuries. Real prevention comes from progressive loading, strength and adequate rest.

Frequently asked questions

Does stretching before running prevent injuries?

The evidence is limited. In continuous running, static stretching beforehand does not significantly reduce the risk of injury. A well-executed dynamic warm-up does improve performance and probably reduces acute muscle injuries.

How long should I hold each static stretch?

Between 20 and 45 seconds per position is the range with the best support for gaining flexibility. Going beyond 60 seconds adds no further benefit and, if done right before strength or speed training, can impair performance.

Does stretching help with muscle soreness?

Not in any clinically relevant way. The Cochrane review concluded that the effect on delayed muscle soreness is minimal. For soreness, gentle movement and time work best.

Can I do yoga as a substitute for warming up?

It depends. A vigorous yoga session (vinyasa) can serve as a warm-up. Very static or restorative yoga right before a strength session can reduce your performance. Use it as a standalone session for mobility.

Is it true that stretching more makes you faster or stronger?

Not directly. Gaining range of motion can improve technique in exercises such as the deep squat or kick, but flexibility on its own does not increase strength or speed. What trains those qualities is specific training.

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