Act as a certified fitness trainer with 10 years of experience in creating engaging content for health and wellness audiences. Write a dynamic and informative script for a [5-10 minute] Q&A video addressing common fitness questions. The script should include an engaging introduction, [3-5] viewer-submitted questions (e.g., 'How often should I work out?' or 'What’s the best diet for muscle gain?'), and clear, actionable answers. Use a [conversational tone] to keep the audience engaged, and end with a call-to-action encouraging viewers to [subscribe for more tips]. Ensure the script is structured with smooth transitions between questions and maintains high energy throughout.