Pec Dec Machine

The pec deck machine, or machine fly, as it is more commonly known, is a gym apparatus that is made specifically to isolate the chest muscles, or pectoral muscles from which the name “pec deck” is derived, during exercise, thus allowing one to really develop those muscles in particular.A machine fly, alternatively called a seated lever fly or "Pec Deck" fly is a strength training exercise based on the free weight chest fly.