Dr. Yi-Cheng Wu
中文

Should You Stretch Before Exercise? Static Stretching vs. Dynamic Warm-Up

By Dr. Yi-Cheng Wu · Reviewed June 21, 2026

It's not that you can't stretch before exercise; just don't treat long static stretching as your main warm-up or injury-prevention method — lead with a dynamic warm-up before training, and save static stretching for after training and for everyday flexibility needs.

Before exercise, lead with a dynamic warm-up (raise your temperature, wake up the neuromuscular system, and make your movements resemble the sport ahead), and save static stretching for after training or for general flexibility work. Studies show that static stretching alone has limited effect on preventing overall sports injuries; stretching one muscle group for too long before an event (more than about 60 seconds per muscle group) may also briefly affect power and speed. The actual plan still depends on the sport and your individual situation, and should be assessed by a physician, physical therapist, or qualified coach.

The right order for warming up before exercise (4 steps)

  1. Warm the body up first

    Spend about 3-5 minutes with brisk walking, jogging, cycling, a rowing machine, jump rope, or easy jumping jacks so your body temperature rises and your breathing quickens slightly; you don't need to make yourself tired.

  2. Do dynamic mobility

    For about 5-10 minutes, choose controlled movements that match the sport's demands — such as leg swings, walking lunges, high knees, hip mobility drills, empty-bar movements, or light warm-up sets — to help raise your temperature, wake up the neuromuscular system, and increase your active range of motion.

  3. Move into a sport-specific warm-up

    The closer you get to the actual activity, the more your movements should resemble that activity. For running, progress from a jog to strides to pace runs; for strength training, go from the empty bar to light loads to working sets; for ball sports, go from movement footwork to changing direction to acceleration and passing/catching.

  4. Save static stretching for after exercise

    Schedule long static stretching for after training, before bed, or during regular flexibility work. If you stretch before exercise, avoid holding a single muscle group for too long (holding more than about 60 seconds has a more noticeable effect). Sports that need a large range of motion can add brief static stretching within a full warm-up, then return to dynamic movements afterward.

For many people, the first thing they do before exercise is sit down and stretch their hamstrings, calves, and the front of their thighs. But does this really make you less likely to get hurt and help you perform better? The answer isn’t as straightforward as you might think.

The key isn’t whether you can stretch, but that static stretching and a dynamic warm-up have different purposes and suit different moments. Only by putting each in the right place can you lower injury risk without sacrificing performance.

The bottom line

It’s not that you can’t stretch before exercise; just don’t treat long static stretching as your main warm-up or injury-prevention method. The approach that better fits current literature and practice is:

  • Before training / before competition: lead with a dynamic warm-up.
  • After training / everyday: arrange static stretching according to your flexibility needs.

If your sport demands power, speed, jumping, sprinting, or changes of direction (such as running, ball sports, strength training, combat sports, or track and field), you should get your body moving before exercise rather than holding a single stretch position for a long time.

What is static stretching?

Static stretching means taking a muscle to a position where you feel tension and then holding it there for a while. Common examples include:

  • Hamstring stretch
  • Calf stretch against a wall
  • Quadriceps stretch
  • Hip flexor stretch
  • Piriformis stretch

Its main purpose is to improve flexibility, increase joint range of motion, and address specific mobility limitations. But a reminder: static stretching is not an injury-proofing magic trick, and it isn’t the whole of pre-exercise preparation.

Can static stretching prevent sports injuries?

Current research shows that static stretching alone has fairly limited effect on preventing overall sports injuries (in one meta-analysis, the relative risk for stretching reducing injury risk was about 0.96, so the difference was not marked).

This doesn’t mean stretching is useless; rather, it cannot replace genuinely effective injury-prevention strategies, such as:

  • Strength training
  • Neuromuscular control training
  • Balance and proprioception training
  • Sensible management of training volume
  • Progressive loading
  • Sport-specific movement preparation

A more precise way to put it is that static stretching can improve flexibility but should not be used on its own as the main method for preventing sports injuries.

Long static stretching before exercise may affect performance

If, before a competition or high-intensity training, you do long static stretching on the same muscle group, it may briefly affect:

  • Power
  • Maximal strength
  • Sprinting speed
  • Jumping ability
  • Reactive movement performance

This effect is more noticeable when each muscle group is stretched for more than about 60 seconds. But to be clear: not all static stretching lowers performance. If you only stretch briefly and then follow it with a full dynamic warm-up and sport-specific drills, the effect is usually small. So there’s no need to demonize static stretching — just put it in the right place, control the time, and adjust it to your sport’s demands.

What is a dynamic warm-up?

A dynamic warm-up uses controlled movements to gradually bring the body into an exercise-ready state. Its goal isn’t simply to loosen the muscles but to prepare the body for the exercise ahead, and it can help:

  • Raise body temperature
  • Increase blood flow
  • Wake up the neuromuscular system
  • Increase active range of motion
  • Improve joint mobility
  • Make movements resemble the demands of the exercise ahead

Common examples include leg swings, walking lunges, lateral lunges, high knees, jumping jacks, hip circles, strides, empty-bar squats, and light warm-up sets.

What should you do before exercise?

Most people can follow this order:

  1. Warm the body up first (about 3-5 minutes): brisk walking, jogging, cycling, a rowing machine, jump rope, or easy jumping jacks all work. The goal is to raise body temperature and quicken your breathing slightly, not to make yourself tired.
  2. Do dynamic mobility (about 5-10 minutes): choose movements based on your sport’s demands.
    • Before running: leg swings, walking lunges, high knees, butt kicks, strides.
    • Before strength training: hip mobility, scapular control, empty-bar movements, light warm-up sets, squat or deadlift movement rehearsal.
    • Before ball sports: lateral lunges, change-of-direction runs, small quick steps, progressive sprints, jump-landing control.
  3. Move into a sport-specific warm-up: the closer you get to the actual activity, the more your movements should resemble that activity.
    • Running: jog to strides to pace runs.
    • Strength training: empty bar to light loads to working sets.
    • Basketball: movement footwork to changing direction to jump shots.
    • Soccer: running to changing direction to passing and catching to acceleration.

When should you do static stretching?

It’s better placed after training, before bed, during regular flexibility work, or when you have a specific mobility limitation. Sports that inherently need a large range of motion — such as dance, gymnastics, martial arts, hurdling, and throwing — can include brief static stretching within a full warm-up, but it’s still better to follow it with dynamic movements and sport-specific preparation.

Practical notes for patients

  1. Remember the order: warm up first, then dynamic mobility, then a sport-specific warm-up; save static stretching for after exercise.
  2. Control the time and timing: if you stretch before exercise, don’t hold a single muscle group for too long (the effect is more noticeable beyond about 60 seconds); sports that need a large range of motion can add it briefly.
  3. Injury prevention relies on the whole picture: regular strength, balance, and neuromuscular training, along with sensible training volume, are the keys to lowering injury risk, and stretching is only one part of it.

The above is general sports medicine health education, not individual medical or training advice, and makes no guarantee of any outcome. Everyone’s sport, fitness level, and injury history differ, so the actual warm-up and stretching plan should be decided based on your individual situation after assessment by a physician, physical therapist, or qualified coach.

References

  1. Lauersen JB, et al. (2014) British Journal of Sports Medicine.
  2. Behm DG, et al. (2016) Applied Physiology, Nutrition, and Metabolism.
  3. Kay AD, Blazevich AJ. (2012) Medicine & Science in Sports & Exercise.
  4. Opplert J, Babault N. (2018) Sports Medicine.
  5. Afonso J, et al. (2021) Frontiers in Physiology.

Frequently asked questions

Can stretching before exercise prevent injuries?

Current research shows that static stretching alone has limited effect on preventing overall sports injuries. It can improve flexibility, but it cannot replace genuinely effective injury-prevention strategies such as strength training, neuromuscular control, balance and proprioception training, and sensible management of training volume. A more precise way to put it is that static stretching can improve flexibility but should not be used on its own as the main injury-prevention method.

Why is a long static stretch not recommended right before a competition?

Doing long static stretching on the same muscle group before high-intensity exercise (more than about 60 seconds per muscle group) may briefly affect power, maximal strength, sprinting, and jumping performance. However, if you only stretch briefly and then follow it with a full dynamic warm-up and sport-specific drills, the effect is usually small, and there's no need to demonize static stretching.

So when is a better time to do static stretching?

It's better placed after training, before bed, during regular flexibility work, or when you have a specific mobility limitation. Sports that need a large range of motion — such as dance, gymnastics, martial arts, hurdling, and throwing — can include brief static stretching within a full warm-up, but it's still better to follow it with dynamic movements and sport-specific preparation.

This article is also available in the original Chinese, with the full reference list.

閱讀中文原文 · Read in Chinese