OXFORD PERSONAL TRAINER – SCULPTING YOUR CHEST MUSCLES
Serratus anterior is probably the most overlooked muscle in the chest group. It is known as the “boxer’s muscle”. It is most prominent in boxers, because they use serratus constantly. It’s responsibility is to stabilize the inferior angle (bottom corner) of the scapulae, but when developed will improve the aesthetics in the area outside of your pecs where your rib cage is. J-press is a great move for building up serratus. This video will explain all.