Stretching Before a Workout
Static stretching before strength training temporarily reduces force output. However, the magnitude of this effect is usually blown out of proportion in secondary accounts.
4 min read
What Actually Happens
Holding a stretch for longer than a minute per muscle does indeed reduce subsequent strength and jump performance. The effect is real, but small and short-lived. When held for less than thirty seconds, it is generally not detected in most studies.
Hence the typical error in retelling: "stretching before a workout is harmful." It is harmful to stretch each muscle for two minutes and immediately step under a barbell. Half a minute is not harmful in any way.
What Actually Prepares You for Work
A dynamic warm-up — moving joints through a full range of motion without static holds, plus a few warm-up sets with light weight. This raises muscle temperature and prepares the nervous system for the upcoming movement, without compromising performance.
Practical Takeaway
- Before strength training: movement through a full range of motion, without long holds.
- Move long stretches to the end of the session or to a separate day.
- If a tight muscle prevents proper positioning, stretch it beforehand as well, but briefly.
This is not medical advice. If you have pain or a medical condition, a doctor decides your workout load, not an app — and we'll tell you directly when that's the case.