The importance of becoming fit to sing cannot be overstated. Just like a person who plays an instrument has to keep excellent care of that instrument, you should remember that your body is your instrument. Whatever helps to improve your health also improves your voice. Singing isn't always though of as exercise, but it is actually an athletic activity. Think about how your body moves during singing. Although you may not be moving very much, your lungs and diaphragm are in constant motion. There are a few main types of exercise which can be used to help support your vocal work.