Static stretching before training
Holding long static stretches right before lifting or sprinting slightly lowers strength and power, and it has not been shown to prevent injuries. Short holds inside a full warm-up have only a trivial effect, so they are fine if you need the range of motion. A general warm-up with dynamic movement and lighter sets of your first exercise is the better default.
What the science says
- Static stretching before training improves performance or prevents injury Limited evidence
A systematic review in healthy active people (Behm et al., 2016) found static stretching had no clear effect on all-cause or overuse injuries, and immediate performance tended to drop slightly (about −3.7% on average).
- Long holds reduce strength and power Strong evidence
A meta-analysis of 104 studies (Simic et al., 2013) found pre-exercise static stretching reduced strength, power and explosive performance, with the smallest losses at stretch durations of 45 s or less. Behm et al. (2016) found larger losses with 60 s or more per muscle (−4.6%) than with less than 60 s (−1.1%).
- Short holds inside a full warm-up are trivial Moderate evidence
A 2019 review (Chaabene et al.) concluded that short static stretching (60 s or less per muscle) within a full warm-up with aerobic and dynamic activity only trivially affects strength and power.
- Range of motion improves briefly Strong evidence
All stretching forms improved range of motion, typically for less than 30 minutes after stretching (Behm et al., 2016).
How to apply it
Warm up with light cardio, dynamic movement and ramp-up sets; keep any static stretching short, or move long holds to after training.
Who should be careful
Stretch to mild tension, never pain. People with joint hypermobility or a current injury should get guidance from a physiotherapist or other qualified professional before adding stretching.
Frequently asked questions
Will stretching before lifting ruin my workout?
Short holds won't do much. Holds of 60 seconds or more per muscle cause small drops in strength and power; under 60 seconds within a full warm-up has only a trivial effect.
Does stretching before training prevent injuries?
Not clearly. A systematic review found no clear effect of static stretching on all-cause or overuse injuries.
What should I do to warm up instead?
5–10 minutes of light cardio, some dynamic movement and 2–3 lighter sets of your first exercise.
Scientific references
- Does pre-exercise static stretching inhibit maximal muscular performance? A meta-analytical review
- Acute effects of muscle stretching on physical performance, range of motion, and injury incidence in healthy active individuals: a systematic review
- Acute Effects of Static Stretching on Muscle Strength and Power: An Attempt to Clarify Previous Caveats
More training methods
- Drop sets Moderate evidence
A drop set takes a set to failure, then immediately cuts the load and keeps going.
- Rest-pause sets (including myo-reps) Limited evidence
Rest-pause means taking a set close to failure, resting 15–30 seconds, then squeezing out a few more reps, repeated a few times.
- Supersets Moderate evidence
A superset pairs two exercises back to back with little or no rest.
- High-intensity interval training (HIIT) Strong evidence
HIIT alternates short hard efforts with recovery.
- Zone 2 training Limited evidence
Easy, steady cardio clearly improves fitness and health, but the popular claim that "Zone 2" is a special, optimal intensity for building mitochondria and burning fat is not supported.
- Fasted training (fasted cardio) Limited evidence
Training on an empty stomach burns more fat during the session, but that does not translate into more fat lost over weeks.