Overall Rating: 4.5 (of 5)
Most guitar players, beginner or guitar god, hold their guitar improperly. What's wrong? Where they place their thumb. Most likely, they will have their thumb wrapped over the fretboard. This causes the development of the finger muscles to be slowed down. It may cause the forearm muscles to develop at a more rapid rate, but that is adding more bulk than you want, for it slows you down.