- It's beneficial to know if the trainer has experience helping people who are at the same fitness level as you, whether you're just starting out or are more advanced. 4. **How does the trainer track and measure progress over time?

- It's beneficial to know if the trainer has experience helping people who are at the same fitness level as you, whether you're just starting out or are more advanced. 4. **How does the trainer track and measure progress over time?