Facts

• The pectoral muscles connect the ventral walls of the chest with the arms and shoulders. The pectoralis major is the large muscle positioned on either side of the chest, while the pectoralis minor is a smaller triangular muscle that rests beneath the pectoralis major and assists in shoulder movement.
  
  

Location

• The term outer pec refers to the outside edges of each pectoralis major, particularly the lower, rounding slope of the muscles.
  
  

Benefits

• Developing the outer pecs brings muscle density and width to the entire chest region. Strengthening the outer pecs provides bodybuilders with dramatic chest definition.
  
  

Solution

• Dumbbell flys work the outer pecs. While lying on a bench with a dumbbell in each hand, extend the arms outwards and lift them up above the chest in a controlled, arching motion.
  
  

Considerations

• Performing dumbbell flys with high reps and low weight is the best way to define the outer pecs. Using low weight will also help avoid potential injury.