Act as a certified fitness trainer with 10 years of experience in sports performance and injury prevention. Create a detailed guide explaining the benefits of dynamic stretching for [TARGET AUDIENCE: athletes, office workers, seniors]. Include at least [NUMBER: 5] key advantages, such as improved [BENEFIT: flexibility, blood circulation, muscle activation], and provide [EXAMPLE: specific dynamic stretches] tailored to the audience's needs. Explain how dynamic stretching differs from static stretching and why it's ideal for [ACTIVITY: pre-workout routines, daily mobility, rehabilitation]. Use clear, actionable language and cite relevant studies if possible.