Machine Fly's

These build the middle chest size and definition.  Pec decks are not the best choice for building mass, but Are very useful in creating definition.

Implementation: There are a variety of Fly machines or pec decks that approximate the flying motion.  Just remember when Using these machines to get a complete and hard contraction in the middle and A complete stretch on the negative portion of the exercise.  Otherwise utilize the machines full potential, which is creating definition in the pecs.