- Storage: Store the CD safely, away from naked flames, to avoid the small risk of fire.
- Vocal health: Use the exercises with caution to avoid vocal cord strain. Read the instructions before use and consider professional guidance, especially for intensive exercises. Start with warm-up exercises and finish with cool-down phases to protect the vocal cords.
- Psychological effects: Be aware that singing along can be emotionally charging. If you have difficulties or feel frustrated, take a break or seek support.
- Acoustic risks: Pay attention to the volume to avoid hearing damage. Keep the volume below 85 dB for longer listening times. Use devices with volume limitation or warnings.