1. Stay hydrated: Drink plenty of water before and during your vocal performance to keep your throat lubricated and prevent the buildup of phlegm.
2. Use a humidifier: If the air is dry, use a humidifier to add moisture to the air and help keep your throat from drying out.
3. Warm up your voice: Before you start growling, do vocal warm ups and exercises for 10-15 minutes to prepare your voice and reduce the strain placed on it.
4. Proper technique: Ensure that you are using the correct technique when performing death metal growls. Focus on projecting your voice from the diaphragm and using your abdominal muscles to support your vocal cords, rather than relying solely on your throat muscles.
5. Take breaks: If you start to feel your voice getting gurgly or strained, take a break and give your voice a chance to rest.
6. Avoid sugary drinks and dairy products: Sugary drinks and dairy products can thicken the mucus in your throat, which can make gurgling more likely.
7. Use a throat lozenge: If your throat is feeling dry or irritated, you can try using a throat lozenge to soothe and lubricate it.
8. See a doctor: If you experience persistent gurgling or hoarseness, it's important to see a doctor to rule out any underlying medical conditions.
Remember, it's important to prioritize the health of your voice and to avoid pushing it too hard. If you experience any pain or discomfort, stop growling and give your voice a chance to recover.