Stretching has been regarded for decades as a key to mobility, injury prevention, and recovery. But what does current research say? This lecture offers a compact introduction to common stretching methods and presents key findings from the international Delphi study of 2025 led by Prof. Dr. Dr. Jan Wilke. The focus is on evidence-based answers to questions such as: When is stretching useful – and when is it not? What goals can actually be achieved through stretching? What role does strength training play as a possible alternative? The lecture dispels widespread myths, presents nuanced perspectives, and provides guidance for contemporary mobility training – balancing tradition, habit, and scientific evidence.