I don&#x27;t think this is true at all.  My experience of years of sprinting has given zero such injuries, and usually it&#x27;s first thing in the morning, and the only warm up I have is walking to the car, driving to the track, walking from the car to the track.<p>I&#x27;ve also never did more than a few incremental warm up sets before lifting (relatively heavy) and have never had a pull or a tear.<p>Warming up is one of those seemingly agreed upon myths in which the scientific evidence is minimal and typically shows the contrary.<p>edit: for example: <a href="http:&#x2F;&#x2F;healthland.time.com&#x2F;2013&#x2F;04&#x2F;08&#x2F;why-stretching-may-not-help-before-exercise&#x2F;" rel="nofollow">http:&#x2F;&#x2F;healthland.time.com&#x2F;2013&#x2F;04&#x2F;08&#x2F;why-stretching-may-not...</a><p>And to add to this, it doesn&#x27;t even make sense from an evolutionary standpoint.  Having a physiology that requires warming up muscles before needing to escape a threat would be weeded out pretty quickly. A predator attacking a camp of humans, for instance, would allow those that can run fast without their &quot;muscles pulling or tearing&quot; to escape leaving those without such an advantage laying about groaning in pain while the predator gets their fill.