This document discusses the benefits of a dynamic warm-up over static stretching before exercise or sports. It recommends that a dynamic warm-up should include 5-10 minutes of light aerobic exercise, dynamic stretches of the major muscles, and sport-specific drills of gradually increasing intensity. This maintains body warmth and prepares the muscles, joints, coordination, and nervous system in a sport-specific way. In contrast, static stretching has been shown to potentially decrease performance and increase injury risk. A dynamic warm-up also helps prepare the mind for the upcoming activity. Several example dynamic exercises are provided.