Should I stretch before running?
Last updated September 3, 2026.
Not the old way - a meta-analysis of 25 trials (26,610 participants) found static stretching had no injury-prevention benefit, while strength training cut injuries to under a third. What helps before a run is a dynamic warm-up - leg swings, walking lunges, easy jogging - raising muscle temperature for the work ahead. Save long static holds for after, when muscles are warm; Harvard notes stretching is a long-term flexibility practice, not a pre-run shield. Pymander's escalation routing is built and tested specifically for this class of decision; see the safety architecture working paper.
What to do
- Warm up dynamically: 5 minutes of leg swings, lunges, and easy jogging before the run.
- Stretch after: long static holds belong post-run, on warm muscles.
- Prevent injuries in the gym: twice-weekly strength work is the intervention with real numbers behind it.
- Get seen if: a tight spot becomes focal pain that alters your stride - that is a strain brewing, not stiffness.
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