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Stretching before or after a workout?

"Did you stretch first?" We've heard that question since school, as if a few seconds touching your toes protected you from everything. The reality is more nuanced, and often the opposite of what we believe. Stretching has its place, but not just any kind, not at any time, and not for the reasons we imagine. In this guide I'll explain the difference between static and dynamic stretching, what to do before and after a session, and why stretching is neither an anti-soreness remedy nor an anti-injury shield. You'll leave with a simple routine and realistic expectations.

By Kael Martinez, certified personal trainer · 10 years of experience · Published June 15, 2026 · 10 min read

Why there's so much confusion about stretching

Few topics generate as many myths as stretching. For decades we were told to stretch at length before exercise to avoid injury, and afterwards to erase soreness. The science has moved on, but the old reflexes remain ingrained. Before talking about the "right moment", we need to clarify what we mean, because everything depends on the type of stretch.

Static versus dynamic

A static stretch means bringing a muscle into a lengthened position and holding it, motionless, for several seconds. A dynamic stretch instead moves the joint through its full range in a controlled, repeated way: leg swings, rotations, walking lunges. The first aims mainly at lengthening and release; the second prepares the body for movement. Confusing the two is the first source of error.

Flexibility and mobility are not the same

Flexibility is the range a muscle can reach passively, when stretched. Mobility is the range you can control actively, with strength, in a real movement. You can be very flexible yet have poor mobility, lacking strength in the extreme ranges. For most people, it's useful mobility that truly matters day to day and in training, and it's built as much by strength work as by stretching.

What stretching is not

Stretching is not a warm-up on its own, nor a guarantee against injury, nor a cure for soreness. It's an excellent tool for maintaining and developing flexibility, releasing tension and improving your body awareness. The whole point is to give it the right role, at the right time, without crediting it with powers it doesn't have.

Before the session: prepare, don't relax

Before exercise, your goal is to raise muscle temperature, wake up the nervous system and prepare the joints for movement. This is not the time to relax the muscle with long held stretches, because a muscle "lulled" by prolonged lengthening is less ready to produce force.

The role of the dynamic warm-up

A good warm-up strings together progressive movements that build in intensity: a few minutes of light cardio, then broad movements specific to your session (bodyweight squats, lunges, swings, shoulder rotations). The idea is to move through the ranges you're about to use, actively. That's what truly primes performance and reduces stiffness, far more than a static stretch.

The problem with long holds before exercise

Holding a static stretch for a long time, beyond about a minute, right before a strength or speed effort, can temporarily lower the power and force available. The effect is moderate and reversible, but pointless to endure before a session where you want to perform. If you enjoy the feel of a small stretch before starting, keep the holds short and always finish with active movement.

Type Best moment Main effect
Dynamic warm-up Before the session Primes muscles and joints, supports performance
Dynamic stretches (swings) Before the session Opens active range without lowering force
Short static stretches After or separately Relaxes, maintains flexibility
Long static stretches (> 60 s) Dedicated flexibility session Builds flexibility; avoid right before exercise
Joint mobility Before or on rest days Improves useful, controlled range

If you're getting back into sport after a long break, this progressive warm-up logic matters even more: I cover it in getting back into sport after 40, where joint preparation makes all the difference.

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After the session: the time for static stretching

Once the effort is over, the context changes completely. You no longer need to produce force, and the muscle is warm: this is the ideal moment for calm flexibility work, without rushing.

Why it's a good moment

After the session, gentle static stretches help release tension, bring the body back to calm and work on flexibility with already-warm, more receptive muscles. It isn't mandatory to progress in strength or lose fat, but it's an excellent end-of-session ritual that marks the transition to recovery. Many people also appreciate the soothing effect on the mind.

What not to expect from it

However, don't count on these stretches to erase soreness or noticeably speed up recovery: the real effect on those points is small. Recovery depends mainly on sleep, nutrition and managing your training load. I detailed all of this in sleep and sports recovery, which remains the truly overlooked lever of progress.

Stretching, or a real flexibility session

If flexibility is a genuine goal for you, a few minutes at the end of a session won't be enough. It's then better to schedule dedicated sessions, where you can take the time to work each area seriously. A light cool-down maintains; a targeted session makes you progress. The two don't play the same role, and it's useful not to confuse them.

The myths to drop

A few stubborn beliefs still guide many people. Questioning them saves time and stops you misdirecting your effort.

"Stretching erases soreness"

This is probably the most widespread myth. Stretching before or after exercise doesn't make soreness disappear or really reduce its intensity. Soreness comes from micro-damage linked to unfamiliar effort, especially in the muscle's braking phase. Time, sleep and light movement relieve it more. To understand what really helps, I explain it in muscle soreness: how to relieve and prevent it.

"Stretching protects against injury"

Here again, stretching alone is no insurance. What protects most is an appropriate warm-up, sensible load progression, strength training and adequate recovery. Good mobility helps you move well and better distribute the load, but it works alongside a well-built training plan, never as a standalone protection you tick off at the start of a session.

"You need to be very flexible to be fit"

Having a correct, pain-free range across everyday movements and your practice is plenty. Chasing extreme flexibility brings no extra health benefit and can even, without the strength to control it, make some joints more fragile. The sensible goal is functional mobility: enough range, under control, to move freely and train properly.

How to stretch well in practice

Let's get concrete. Here's a simple approach that puts each type of stretch at the right moment, without spending hours on it.

Before: an active warm-up of 5 to 10 minutes

Start with a few minutes of light cardio to raise your temperature, then string together dynamic movements that cover your session's ranges: leg swings, walking lunges, hip and shoulder rotations, bodyweight squats. Gradually increase range and speed. You should feel ready and mobile, not loosened or tired.

After: a cool-down of a few minutes

At the end of the session, choose two to four static stretches on the most-worked muscles, held for 20 to 40 seconds, breathing slowly. The tension should be clear but never painful. It's a moment to decelerate, not to set a range-of-motion record. No need to spend twenty minutes: the key is consistency, not duration.

To truly progress in flexibility

If you want to gain range, add two to four short blocks of targeted work across the week, on the areas that need it (hips, hamstrings, shoulders, ankles depending on your profile). A few minutes repeated often beats a long occasional session. And don't forget to build strength in the ranges you gain, so your flexibility becomes controlled, useful mobility. Support in getting back in shape or athletic preparation lets you target exactly what your body needs.

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Frequently asked questions

Should you stretch before or after a workout?

Both moments have a role, but not the same kind of stretching. Before the session, favour a dynamic warm-up rather than long-held static stretches, which can temporarily reduce strength and explosiveness. After the session, or in a dedicated slot, gentle static stretches are useful to build flexibility and release tension. In short: dynamic before to prepare, static after or separately to loosen up.

Does stretching prevent muscle soreness?

Not really. Contrary to a very common belief, stretching before or after exercise doesn't eliminate soreness or meaningfully reduce its intensity. It comes from micro-damage caused by unfamiliar effort, especially in the eccentric phase, and time remains the main recovery factor. Stretching can feel pleasantly relaxing, but you shouldn't expect a magic effect.

Is static stretching before exercise bad?

It isn't dangerous, but often poorly placed. Holding a static stretch for a long time, beyond about a minute, right before a strength or speed effort can temporarily reduce performance. Short holds followed by dynamic movement cause far fewer issues. If you like to stretch beforehand, keep the holds brief and always finish with an active warm-up.

How long should you hold a stretch?

To work on flexibility outside a session, holding each position for 20 to 40 seconds, repeated two or three times, is a good benchmark. The stretch should create a clear but bearable tension, never sharp pain. Breathe slowly and relax on each exhale. Before exercise, though, forget long holds: stay with broad, dynamic movements.

Does stretching prevent injuries?

Stretching alone is not injury insurance. What protects most is a proper warm-up, sensible progression of load and volume, strength training and adequate recovery. Good mobility helps you move well and reduce certain stresses, but it works alongside a well-built training plan, not as a standalone shield.

How often should you stretch to gain flexibility?

Flexibility responds to consistency, like any other physical quality. To progress, aim for targeted work three to five times a week on the areas that need it, rather than one long isolated session now and then. A few minutes done well, frequently, beats a big one-off effort. Consistency over several weeks truly increases your range of motion.

The bottom line

So, before or after the workout? Both, but with the right tool each time: a dynamic warm-up before to prepare the body, gentle static stretches after or in a dedicated slot to maintain flexibility. And above all, realistic expectations: stretching erases neither soreness nor injury risk.

What drives progress is the whole package: an appropriate warm-up, well-managed load, strength work, sleep and mobility trained regularly. Stretching is one piece of that puzzle, useful and pleasant, but not the miracle fix it's too often credited with.

If you want a warm-up and mobility routine calibrated to your body, your practice and any stiffness you carry, I can help. The first assessment session is free: 60 minutes to take stock and build a simple, effective approach you can sustain over time.

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