1. Inhale deeply through the nose, then exhale until completely empty, then time how long you can remain empty. This is to strengthen the diaphragm.
2. Inhale deeply through the nose, then exhale all the air quickly through the mouth until empty, and then pull the stomach in and out 7 times slowly and firmly. This is to strengthen the abdomen.
3. Inhale deeply through the nose, then clearly and at an even volume, start counting out loud until you cannot get out any more numbers or sound. This is to help sustain the breath for long verses, notes, etc.
4. Fold a piece of paper in half and place it on a table, then stand about 3 to 4 feet away, next inhale deeply through the nose and violently blow the paper over. As you improve, increase the distance between you and the paper. This is to improve your projection and coordinate your lower support and power muscles.
These exercises are to be done once a day, while standing and on an empty stomach.