FitFlex - UX Copy

The tone of voice you've chosen—empowering, encouraging, and enthusiastic—is appropriate and works well for a fitness service. The benefits for the user are conveyed clearly. What's more, I really admire the way you've presented your work—everything is easily scannable and digestible.

Still, I think there's room for improvement:

• Phrases like "unlock your full potential," "has never been easier," and "new you" are frequently used in marketing and ads, and the audience might have developed some fatigue with them. I see that it might be tempting to fall back on something like that but I’d suggest focusing on "personalised workout and nutrition plans that fit into your schedule" (I really like that—it feels like you've identified a pain point for many people striving to build healthier habits) and "beginner or a seasoned fitness enthusiast," and developing these points further.
• Capitalization seems a bit inconsistent (the "free trial" thing).

Overall, it's solid work—keep striving for more!