1) Exercise it by singing and hitting different notes, however don't go overboard
2) Make sure you don't overuse your voice, as well as trying to rest your voice when you are sick
3) Overall, have healthy habits, like not smoking and drinking a sufficient amount of water.
Family members can support good eating habits which is great for good nutrition. They should also be there for that child emotionally. An example of positive behavior would be to listen to your child when they talk about a serious issue they have such as anorexia, bulimia, depression, etc. An example of negative behavior would be to ignore them when they talk about serious issues such as the ones previously listed.
First you need to take her to the doctor and then do what ever the doctor said so.
good luck
Although snacks might boost your energy and can help individuals maintain a good energy level, some snacks might be filled with sugars that your body doesn't need.
Also, too many snacks and overeating isn't healthy for you body. A daily diet should consist of three meals and about one to two snacks.
In addition, snacks are not really important in someone's diet it is better to consume fruits and vegetables, rather than snacks.
I hope this was helpful to you! ^w^