- Choking hazard: This book is not suitable for children if it is damaged or torn. Keep it away from children in this condition.
- Fire hazard: Store the book away from open flames or heat sources, as paper is flammable.
- Dust formation: Clean the book and its surroundings regularly to minimize dust formation that could cause respiratory problems.
- Exercise with caution. If you have existing health problems, consult a doctor or trainer before exercising. The exercises do not replace medical treatment.
- Listen to your body and mind and adapt exercises if necessary.
- Safe handling: Handle the book carefully to avoid damaging it. Avoid bending or hitting the book too hard.

- 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.