HOW TO DO A PEC DECK REAR DELT FLY 

Thank you, i wanted to see how to set up that machine

Yeah with all due respect, your shoulders shouldn’t pass their natural line. This will injure your shoulders because they aren’t moving in natural position. You can think of it as when your shoulders go to your sides don’t go any further pass that.

Peck deck does work the rear delt, it puts the shoulders in a risky position tho, I only do it 3 times a week

Aaaannd that gets a don't recommend channel. Ffs

wrong

it's upper back fly not rear delt fly :)))))