The pectoralis minor is a shoulder muscle that connects the scapula to the ribs, effecting scapular motion and breathing when the scapula is fixed. It is active anytime we need stabilization of the shoulder girdle with the arms in front of us.
The deltoid is a shoulder muscle that connects the clavicle, scapula and humerus together, allowing the arm to move freely in many directions. It is active most of the day in most movements that we do - even when walking!
Awareness of the muscles and their specific function has allowed me, clients and students to re-connect with their movement patterns.This education then leads to better movement patterns which influences higher levels of performance and lower instance of injury.