"I do a lot of vocal hygiene"

Lesley Garrett is a British soprano singer who is known for her singing expertise. In this quote, she is referring to the practice of singing hygiene, which is the practice of looking after one's voice. This includes things like drinking plenty of water, preventing smoking and alcohol, and preventing speaking in a loud or stretched voice. Vocal health likewise consists of warm-up workouts and singing exercises to help keep the voice in good condition. By practicing singing hygiene, singers can keep their singing health and make sure that their voices stay strong and healthy. Lesley Garrett is stressing the significance of vocal health for vocalists, as it is important for preserving a healthy voice.