From the 1960s to the 1990s, static stretching was an important component of warm-ups with the thought that it would increase range of motion, decrease injury incidence and improve performance. But in the late 1990s and into the new millennium, a growing body of evidence reported that static stretching would actually impair performance. However, recent analytical reviews have illustrated that much of this research was not ecologically valid (did not examine normal stretching practices). In fact, the newest research shows that with a comprehensive warm-up, static stretching does not tend to impair performance. This video highlights the problems in the literature and the proper incorporation of static stretching into a pre-activity routine.