question: Write a motivational speech for teenagers about fitness that includes the word "challenge" at least four times, the word "dedication" at least two times, and is exactly 150 words long.
answer: Hello everyone,
  
  Today, I want to talk to you about the incredible journey of fitness. Fitness is not just about physical strength; it's a path that challenges us to become better versions of ourselves. Every step on this path is a challenge, a test of our willpower and dedication. It's about embracing each challenge, whether big or small, and pushing through with relentless dedication.
  
  Remember, fitness isn't a sprint; it's a marathon. It's about showing up every day, even when the odds are against you. Each workout is a challenge to be overcome and a victory to be celebrated. Dedication is your greatest ally on this journey. With every challenge you face, you grow stronger and more resilient.
  
  So, rise to the challenge, stay committed, and let your dedication guide you. Believe in your potential, and you'll achieve greatness. Fitness is your journey. Own it!
  
  Thank you.