Deep breathing is the key to a louder voice! It takes a lot of practice, but it works!!!!
To fill your lungs completely, inhale through your nose and fill your belly with air without raising your shoulders or chest. Try inhaling and exhaling for various counts to exercise your diaphragm. Need help? Click here for a helpful video introduction to diaphragmatic breathing.
In addition to breathing exercises, aerobic exercise is a great way to gain lung capacity. Start walking, jogging, biking, or swimming at least 30 minutes per day.