This source explains the importance of mobility in fitness, highlighting its benefits like improved movement efficiency, increased range of motion, and reduced injury risk. It also addresses common reasons people neglect mobility, such as finding it boring or prioritising other fitness goals. The author then outlines three key principles for enhancing mobility: varying warm-ups to activate specific muscles for the day's training, focusing on joint function by understanding whether they hinge, rotate, or need to be stable or mobile, and incorporating tempo into exercises to improve movement quality and stability. The text concludes by suggesting that while stretching and foam rolling have their place, these principles can have a greater impact on overall mobility and injury prevention.